SSMTP Class

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The SSMTP Class is used to send internet mail using the SMTP protocol (the internet mail standard).

Syntax

class ipworkssmime.SSMTP

Remarks

The SSMTP Class is the S/MIME enabled equivalent of the IPWorks SMTP Class. In addition to standard SMTP functions, the SSMTP class can sign and/or encrypt messages in a PKCS envelope. The methods and properties for encrypting and signing are identical to those provided with the S/MIME Class. After setting the certificate properties, and specifying message_text, call the encrypt, sign, or sign_and_encrypt method before sending, and the result will be stored in message_text.

The SSMTP Class implements a standard SMTP client as specified in RFC 821. It has a simple plug-and-play interface. It contains a number of properties, such as send_to, subject, from_, cc, and b_cc, that map directly to the internet mail message headers with the same name (RFC 822). The message text is set in message_text. Messages are sent by calling the send method.

The class supports message delivery to multiple recipients through the send_to, cc, and b_cc properties. Simply specify the destination email addresses separated by commas.

The interface of the class is open-ended. New features, including MIME attachments, can be supported by using the other_headers property.

A number of events provide feedback during the operation of the class. The on_transfer event is fired during message delivery to show the number of bytes delivered. The on_pi_trail event traces the commands that are sent to the server and the respective replies.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.

allow_extensions Property

This property is a switch allowing the class to use ESMTP features (Extended SMTP).

Syntax

def get_allow_extensions() -> bool: ...
def set_allow_extensions(value: bool) -> None: ...

allow_extensions = property(get_allow_extensions, set_allow_extensions)

Default Value

TRUE

Remarks

This property is a switch allowing the class to use ESMTP features (Extended SMTP). If this property is True, the class will first send the EHLO greeting (Extended Hello) to the server and, if that fails, the standard HELO command will be sent.

This property is True by default but may be disabled if it is known in advance that the mail_server does not support SMTP extensions.

auth_mechanism Property

This property is used when connecting to the mail server.

Syntax

def get_auth_mechanism() -> int: ...
def set_auth_mechanism(value: int) -> None: ...

auth_mechanism = property(get_auth_mechanism, set_auth_mechanism)

Default Value

0

Remarks

This is the authentication mechanism property to be used when connecting to the mail server.

By default, this property is amUserPassword (0), and if the user and password properties are set, the AUTH command is sent to the server for authentication. If this property is set to amCRAMMD5 (1), CRAM-MD5 authentication is used instead.

If this property is set to amNTLM (2), NTLM authentication will be used.

If this property is set to amKerberos (6), Kerberos authentication will be used.

Note: This functionality is available only in Windows.

When set to amXOAUTH2 (7), set user to the username and AuthorizationIdentity to the OAuth token. See AuthorizationIdentity for details.

b_cc Property

This property includes a comma-separated list of addresses for blind carbon copies (optional).

Syntax

def get_b_cc() -> str: ...
def set_b_cc(value: str) -> None: ...

b_cc = property(get_b_cc, set_b_cc)

Default Value

""

Remarks

This property specifies a comma-separated list of destinations for blind carbon copies of the mail message. A copy of the message is sent to each destination. Because no BCc SMTP header is created containing the destination addresses, individual recipients never see the list of the other recipients.

The class will return an error if the mail_server returns an error code about any email address specified in send_to or cc but it will fire an on_error event only if the same thing happens with an email address specified in this property.

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

Note: You must clear the message_recipients properties before setting this property to remove previous recipients.

cc Property

This property includes a comma-separated list of addresses for carbon copies (optional).

Syntax

def get_cc() -> str: ...
def set_cc(value: str) -> None: ...

cc = property(get_cc, set_cc)

Default Value

""

Remarks

This property specifies a comma-separated list of destinations for carbon copies of the mail message. A copy of the message is sent to each destination, and a Cc SMTP header is created containing the destination addresses. This header is sent to every recipient of the message. If you don't want to copy this information to every recipient, then use blind carbon copies instead (see the description of the b_cc).

The class will return an error if the mail_server returns an error code about any email address specified in send_to or cc but it will fire an on_error event only if the same thing happens with an email address specified in b_cc.

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

Note: You must clear the message_recipients properties before setting this property to remove previous recipients.

cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_cert_effective_date() -> str: ...

cert_effective_date = property(get_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_cert_expiration_date() -> str: ...

cert_expiration_date = property(get_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_cert_extended_key_usage() -> str: ...

cert_extended_key_usage = property(get_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_cert_fingerprint() -> str: ...

cert_fingerprint = property(get_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_cert_fingerprint_sha1() -> str: ...

cert_fingerprint_sha1 = property(get_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_cert_fingerprint_sha256() -> str: ...

cert_fingerprint_sha256 = property(get_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

cert_issuer Property

The issuer of the certificate.

Syntax

def get_cert_issuer() -> str: ...

cert_issuer = property(get_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_cert_private_key() -> str: ...

cert_private_key = property(get_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The cert_private_key may be available but not exportable. In this case, cert_private_key returns an empty string.

This property is read-only.

cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_cert_private_key_available() -> bool: ...

cert_private_key_available = property(get_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a cert_private_key is available for the selected certificate. If cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_cert_private_key_container() -> str: ...

cert_private_key_container = property(get_cert_private_key_container, None)

Default Value

""

Remarks

The name of the cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

cert_public_key Property

The public key of the certificate.

Syntax

def get_cert_public_key() -> str: ...

cert_public_key = property(get_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_cert_public_key_algorithm() -> str: ...

cert_public_key_algorithm = property(get_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_cert_public_key_length() -> int: ...

cert_public_key_length = property(get_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_cert_serial_number() -> str: ...

cert_serial_number = property(get_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_cert_signature_algorithm() -> str: ...

cert_signature_algorithm = property(get_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_cert_store() -> bytes: ...
def set_cert_store(value: bytes) -> None: ...

cert_store = property(get_cert_store, set_cert_store)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The cert_store_type property denotes the type of the certificate store specified by cert_store. If the store is password-protected, specify the password in cert_store_password.

cert_store is used in conjunction with the cert_subject property to specify client certificates. If cert_store has a value, and cert_subject or cert_encoded is set, a search for a certificate is initiated. Please see the cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_cert_store_password() -> str: ...
def set_cert_store_password(value: str) -> None: ...

cert_store_password = property(get_cert_store_password, set_cert_store_password)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_cert_store_type() -> int: ...
def set_cert_store_type(value: int) -> None: ...

cert_store_type = property(get_cert_store_type, set_cert_store_type)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_cert_subject_alt_names() -> str: ...

cert_subject_alt_names = property(get_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_cert_thumbprint_md5() -> str: ...

cert_thumbprint_md5 = property(get_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_cert_thumbprint_sha1() -> str: ...

cert_thumbprint_sha1 = property(get_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_cert_thumbprint_sha256() -> str: ...

cert_thumbprint_sha256 = property(get_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_usage Property

The text description of UsageFlags .

Syntax

def get_cert_usage() -> str: ...

cert_usage = property(get_cert_usage, None)

Default Value

""

Remarks

The text description of cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_cert_usage_flags() -> int: ...

cert_usage_flags = property(get_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of cert_usage_flags is a combination of the following flags:

Please see the cert_usage property for a text representation of cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

cert_version Property

The certificate's version number.

Syntax

def get_cert_version() -> str: ...

cert_version = property(get_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_cert_subject() -> str: ...
def set_cert_subject(value: str) -> None: ...

cert_subject = property(get_cert_subject, set_cert_subject)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_cert_encoded() -> bytes: ...
def set_cert_encoded(value: bytes) -> None: ...

cert_encoded = property(get_cert_encoded, set_cert_encoded)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The cert_store and cert_subject properties also may be used to specify a certificate.

When cert_encoded is set, a search is initiated in the current cert_store for the private key of the certificate. If the key is found, cert_subject is updated to reflect the full subject of the selected certificate; otherwise, cert_subject is set to an empty string.

connected Property

Whether the class is connected.

Syntax

def get_connected() -> bool: ...

connected = property(get_connected, None)

Default Value

FALSE

Remarks

This property is used to determine whether or not the class is connected to the remote host. Use the connect and disconnect methods to manage the connection.

This property is read-only.

delivery_notification_to Property

This property includes the email address to which to send a delivery notification.

Syntax

def get_delivery_notification_to() -> str: ...
def set_delivery_notification_to(value: str) -> None: ...

delivery_notification_to = property(get_delivery_notification_to, set_delivery_notification_to)

Default Value

""

Remarks

This property contains the email address to send to which to send a delivery notification. When set, a Return-Receipt-To header is added to the message. This property should be set to an email address that can receive the delivery notification.

encrypting_algorithm Property

The property includes textual description of the encrypting algorithm.

Syntax

def get_encrypting_algorithm() -> str: ...
def set_encrypting_algorithm(value: str) -> None: ...

encrypting_algorithm = property(get_encrypting_algorithm, set_encrypting_algorithm)

Default Value

"3DES"

Remarks

This property contains either the name of the algorithm (such as 3DES or AES), or an object identifier (OID) string representing the algorithm.

Possible values are as follows:

• "3DES"
• "DES"
• "RC2CBC40"
• "RC2CBC64"
• "RC2CBC128" or "RC2"
• "AESCBC128" or "AES"
• "AESCBC192"
• "AESCBC256"
• "AESGCM128" or "AESGCM"
• "AESGCM192"
• "AESGCM256"

firewall_auto_detect Property

Whether to automatically detect and use firewall system settings, if available.

Syntax

def get_firewall_auto_detect() -> bool: ...
def set_firewall_auto_detect(value: bool) -> None: ...

firewall_auto_detect = property(get_firewall_auto_detect, set_firewall_auto_detect)

Default Value

FALSE

Remarks

Whether to automatically detect and use firewall system settings, if available.

firewall_type Property

The type of firewall to connect through.

Syntax

def get_firewall_type() -> int: ...
def set_firewall_type(value: int) -> None: ...

firewall_type = property(get_firewall_type, set_firewall_type)

Default Value

0

Remarks

The type of firewall to connect through. The applicable values are as follows:

firewall_host Property

The name or IP address of the firewall (optional).

Syntax

def get_firewall_host() -> str: ...
def set_firewall_host(value: str) -> None: ...

firewall_host = property(get_firewall_host, set_firewall_host)

Default Value

""

Remarks

The name or IP address of the firewall (optional). If a firewall_host is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the class fails with an error.

firewall_password Property

A password if authentication is to be used when connecting through the firewall.

Syntax

def get_firewall_password() -> str: ...
def set_firewall_password(value: str) -> None: ...

firewall_password = property(get_firewall_password, set_firewall_password)

Default Value

""

Remarks

A password if authentication is to be used when connecting through the firewall. If firewall_host is specified, the firewall_user and firewall_password properties are used to connect and authenticate to the given firewall. If the authentication fails, the class fails with an error.

firewall_port Property

The Transmission Control Protocol (TCP) port for the firewall Host .

Syntax

def get_firewall_port() -> int: ...
def set_firewall_port(value: int) -> None: ...

firewall_port = property(get_firewall_port, set_firewall_port)

Default Value

0

Remarks

The Transmission Control Protocol (TCP) port for the firewall firewall_host. See the description of the firewall_host property for details.

Note: This property is set automatically when firewall_type is set to a valid value. See the description of the firewall_type property for details.

firewall_user Property

A username if authentication is to be used when connecting through a firewall.

Syntax

def get_firewall_user() -> str: ...
def set_firewall_user(value: str) -> None: ...

firewall_user = property(get_firewall_user, set_firewall_user)

Default Value

""

Remarks

A username if authentication is to be used when connecting through a firewall. If firewall_host is specified, this property and the firewall_password property are used to connect and authenticate to the given Firewall. If the authentication fails, the class fails with an error.

from_ Property

This property includes the email address of the sender (required).

Syntax

def get_from() -> str: ...
def set_from(value: str) -> None: ...

from_ = property(get_from, set_from)

Default Value

""

Remarks

This property is used to create a From SMTP header. This header identifies the sender of the message. A valid email address is required. Examples of valid addresses are as follows: "Friendly Name" <address@company.com> or address@company.com

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

idle Property

The current status of the class.

Syntax

def get_idle() -> bool: ...

idle = property(get_idle, None)

Default Value

TRUE

Remarks

This property will be False if the component is currently busy (communicating or waiting for an answer), and True at all other times.

This property is read-only.

importance Property

This property indicates the importance of the mail message (optional).

Syntax

def get_importance() -> int: ...
def set_importance(value: int) -> None: ...

importance = property(get_importance, set_importance)

Default Value

0

Remarks

This property indicates the importance of the mail message (optional). When set, an Importance header will be added to the message.

Importance is an indication to the recipient(s) about the level of importance of the message. The possible values are Unspecified (0), High (1), Normal (2), and Low (3).

include_certificate Property

This property specifies whether to include the signer's certificate with the signed message.

Syntax

def get_include_certificate() -> bool: ...
def set_include_certificate(value: bool) -> None: ...

include_certificate = property(get_include_certificate, set_include_certificate)

Default Value

TRUE

Remarks

If this property is set to True, the certificate used to sign the message will be encoded and included in a message signature when calling sign or sign_and_encrypt.

Including a certificate is the preferred method of building signed messages. If you do not include a certificate, the message recipient may not be able to verify the sender's signature.

include_chain Property

This property specifies whether to include the signer's certificate chain with the signed message.

Syntax

def get_include_chain() -> bool: ...
def set_include_chain(value: bool) -> None: ...

include_chain = property(get_include_chain, set_include_chain)

Default Value

FALSE

Remarks

If this property is set to True, the entire certificate's chain that was used to sign the message will be encoded and included in the message signature when calling sign or sign_and_encrypt.

Note: To include the chain, the include_certificate property must also be set to true.

last_reply Property

This property indicates the last reply received from the server.

Syntax

def get_last_reply() -> str: ...

last_reply = property(get_last_reply, None)

Default Value

""

Remarks

This property indicates the last reply received from the server. It can be used for informational purposes. The same information and more also can be retrieved through the on_pi_trail event.

This property is read-only.

local_host Property

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

def get_local_host() -> str: ...
def set_local_host(value: str) -> None: ...

local_host = property(get_local_host, set_local_host)

Default Value

""

Remarks

This property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface) setting LocalHost to the IP address of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface. It is recommended to provide an IP address rather than a hostname when setting this property to ensure the desired interface is used.

If the class is connected, the local_host property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multihomed hosts (machines with more than one IP interface).

Note: local_host is not persistent. You must always set it in code, and never in the property window.

mail_port Property

This property includes the server port for SMTP (default 25).

Syntax

def get_mail_port() -> int: ...
def set_mail_port(value: int) -> None: ...

mail_port = property(get_mail_port, set_mail_port)

Default Value

25

Remarks

This property contains the server port for SMTP (default 25). A valid port number (a value between 1 and 65535) is required for the connection to take place. The property must be set before a connection is attempted and cannot be changed once a connection is established. Any attempt to change this property while connected will fail with an error.

For an implicit Secure Sockets Layer (SSL), use port 465 (please refer to the ssl_start_mode property for more information).

mail_server Property

This property includes the name or address of a mail server (mail relay).

Syntax

def get_mail_server() -> str: ...
def set_mail_server(value: str) -> None: ...

mail_server = property(get_mail_server, set_mail_server)

Default Value

""

Remarks

This property specifies the IP address (IP number in dotted internet format) or domain name for a mail relay through which messages will be routed. It is set before a connection is attempted and cannot be changed once a connection is in progress.

The current version of the class does not provide a default value for the mail relay. You must provide a host name yourself. Generally, any internet host with an SMTP server will suffice (e.g., a UNIX host), but it is preferable to select a mail_server that is close to the machine sending mail.

If this property is set to a domain name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, an error is returned.

If the class is configured to use a SOCKS firewall, the value assigned to this property may be preceded with an "*". If this is the case, the host name is passed to the firewall unresolved and the firewall performs the DNS resolution.

message Property

This property provides a way to set the raw message content.

Syntax

def get_message() -> bytes: ...
def set_message(value: bytes) -> None: ...

message = property(get_message, set_message)

Default Value

""

Remarks

This property may be set instead of message_text. This value will not be modified in any way by the class and will be sent as is. Use caution when setting this value as all encoding must be done before supplying the value to the component.

message_date Property

This property includes the date of the mail message (optional).

Syntax

def get_message_date() -> str: ...
def set_message_date(value: str) -> None: ...

message_date = property(get_message_date, set_message_date)

Default Value

"*"

Remarks

If this property contains a nonempty string, then a Date SMTP header is created and attached to the message. If it is an empty string, then the date information is added by the mail relay(s) the message goes through.

Special case: If this property is set to the special value "*", a Date SMTP header reflecting the current date and time is generated when message_headers is computed and the message is sent. This is the default behavior of the class

RFC 822 contains detailed date format specifications. An example of a valid date is "Fri, 1 Mar 96 21:24:52 EST".

message_header_count Property

The number of records in the MessageHeader arrays.

Syntax

def get_message_header_count() -> int: ...

message_header_count = property(get_message_header_count, None)

Default Value

0

Remarks

This property controls the size of the following arrays:

• message_header_field
• message_header_value

The array indices start at 0 and end at message_header_count - 1.

This property is read-only.

message_header_field Property

This property contains the name of the HTTP header (this is the same case as it is delivered).

Syntax

def get_message_header_field(message_header_index: int) -> str: ...

Default Value

""

Remarks

This property contains the name of the HTTP Header (this is the same case as it is delivered).

The message_header_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_header_count property.

This property is read-only.

message_header_value Property

This property contains the header contents.

Syntax

def get_message_header_value(message_header_index: int) -> str: ...

Default Value

""

Remarks

This property contains the Header contents.

The message_header_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_header_count property.

This property is read-only.

message_headers_string Property

This property includes the string representation of RFC 822-encoded headers of the message.

Syntax

def get_message_headers_string() -> str: ...

message_headers_string = property(get_message_headers_string, None)

Default Value

""

Remarks

This property holds the full headers of the message in RFC 822 format.

This property is read-only.

message_id Property

This property includes the message identifier for the message.

Syntax

def get_message_id() -> str: ...
def set_message_id(value: str) -> None: ...

message_id = property(get_message_id, set_message_id)

Default Value

"*"

Remarks

This property contains the message identifier for the message. When set, the value of message_id is used as the Message-Id header value of the message. A special value of "*" will automatically generate a random unique identifier for the message.

message_recipient_count Property

The number of records in the MessageRecipient arrays.

Syntax

def get_message_recipient_count() -> int: ...
def set_message_recipient_count(value: int) -> None: ...

message_recipient_count = property(get_message_recipient_count, set_message_recipient_count)

Default Value

0

Remarks

This property controls the size of the following arrays:

• message_recipient_address
• message_recipient_name
• message_recipient_options
• message_recipient_type

The array indices start at 0 and end at message_recipient_count - 1.

message_recipient_address Property

This property contains the email address of the recipient.

Syntax

def get_message_recipient_address(recipient_index: int) -> str: ...
def set_message_recipient_address(recipient_index: int, value: str) -> None: ...

Default Value

""

Remarks

This property contains the email address of the recipient.

The recipient_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_recipient_count property.

message_recipient_name Property

This property contains the name of the recipient.

Syntax

def get_message_recipient_name(recipient_index: int) -> str: ...
def set_message_recipient_name(recipient_index: int, value: str) -> None: ...

Default Value

""

Remarks

This property contains the name of the recipient.

The recipient_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_recipient_count property.

message_recipient_options Property

This property contains the recipient sending options (used only by SMTP).

Syntax

def get_message_recipient_options(recipient_index: int) -> str: ...
def set_message_recipient_options(recipient_index: int, value: str) -> None: ...

Default Value

""

Remarks

This property contains the recipient sending options (used only by SMTP). This must be a string of RFC-compliant recipient options (used by SMTP).

One type of option is a delivery status notification sent per recipient, which is specified by RFC 1891.

component.MessageRecipientOptions(0) = "NOTIFY SUCCESS,FAILURE,DELAY";

The recipient_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_recipient_count property.

message_recipient_type Property

This property contains the recipient type: To, Cc, or Bcc.

Syntax

def get_message_recipient_type(recipient_index: int) -> int: ...
def set_message_recipient_type(recipient_index: int, value: int) -> None: ...

Default Value

0

Remarks

This property contains the recipient type: To, Cc, or Bcc.

The recipient_index parameter specifies the index of the item in the array. The size of the array is controlled by the message_recipient_count property.

message_text Property

This property includes the full text of the message to send (without headers).

Syntax

def get_message_text() -> str: ...
def set_message_text(value: str) -> None: ...

message_text = property(get_message_text, set_message_text)

Default Value

""

Remarks

This property contains the full text of the message.

The text contained in this property should be a collection of lines with lengths less than or equal to 80 bytes separated by CRLF ("\r\n") . The text in the message lines must contain 7-bit characters so that the message can successfully pass through the multitude of mail systems on the Internet.

The class automatically escapes lines that start with a "." by adding another as specified in RFC 821. The message text is unescaped by the receiving agent, so the process is fully transparent.

other_headers Property

This property includes an RFC 822-compliant string consisting of extra headers.

Syntax

def get_other_headers() -> str: ...
def set_other_headers(value: str) -> None: ...

other_headers = property(get_other_headers, set_other_headers)

Default Value

""

Remarks

This property contains a string of headers to be appended to the message headers created from other properties like send_to, subject, and so on.

The headers must be of the format "header: value" as specified in RFC 822. Header lines should be separated by CRLF ("\r\n") .

Use this property with caution. If this property contains invalid headers, message delivery might not be successful.

This property is useful for extending the functionality of the class. A good example is delivery of MIME-encoded messages.

Special case: If this property starts with an empty line (CRLF), then the value of this property is used instead of the normally computed message headers.

Example. Sending an Email with an Additional Header:

component.MailServer = "MyServer"; component.From = "me@server.com"; component.SendTo = "recipient@server.com"; component.Subject = "My Subject"; component.MessageText = "This is the message body."; component.OtherHeaders = "HeaderName: HeaderValue"; component.Send();

password Property

This property includes a password for logon to the MailServer .

Syntax

def get_password() -> str: ...
def set_password(value: str) -> None: ...

password = property(get_password, set_password)

Default Value

""

Remarks

If this property is set to a nonempty string, then when connecting to the mail_server an AUTH or CRAM-MD5 (depending on the value of auth_mechanism) command is sent to provide authentication information for the user.

priority Property

This property includes the priority of the mail message (optional).

Syntax

def get_priority() -> int: ...
def set_priority(value: int) -> None: ...

priority = property(get_priority, set_priority)

Default Value

0

Remarks

When this property is set, a priority header will be added to the message. Priority is an indication about the delivery priority of the message. The possible values are epNormal, epUrgent, and epNonUrgent.

read_receipt_to Property

This property includes the email address to send a read-receipt to.

Syntax

def get_read_receipt_to() -> str: ...
def set_read_receipt_to(value: str) -> None: ...

read_receipt_to = property(get_read_receipt_to, set_read_receipt_to)

Default Value

""

Remarks

When this property is set, a Disposition-Notification-To header is added to the message. This property should be set to an email address that should receive the read-receipt.

reply_to Property

This property includes a mail address to which to reply (optional).

Syntax

def get_reply_to() -> str: ...
def set_reply_to(value: str) -> None: ...

reply_to = property(get_reply_to, set_reply_to)

Default Value

""

Remarks

If this property contains a nonempty string, a Reply-To SMTP header is created for the message. This header shows the address to use for replies, which is useful if this address is different from the one in from_.

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

return_path Property

This property sets the Return-Path to be used for sending email.

Syntax

def get_return_path() -> str: ...
def set_return_path(value: str) -> None: ...

return_path = property(get_return_path, set_return_path)

Default Value

""

Remarks

Setting this property sets the Return-Path to be used for sending email. If this is not set, the value in the from_ property is used.

send_to Property

This property includes a comma-separated list of addresses for destinations (required).

Syntax

def get_send_to() -> str: ...
def set_send_to(value: str) -> None: ...

send_to = property(get_send_to, set_send_to)

Default Value

""

Remarks

This property specifies a comma-separated list of destinations for the mail message. A copy of the message is sent to each of them, and a To SMTP header is created containing the destination addresses.

Examples of valid addresses are as follows: "Friendly Name" <address@company.com> or address@company.com

The class will fail if the mail_server returns an error code about any email address specified in SendTo or cc but it will silently ignore the error if the same thing happens with an email address specified in b_cc.

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

Note: You must clear the message_recipients properties before setting this property to remove previous recipients.

sensitivity Property

This property indicates the sensitivity of the mail message (optional).

Syntax

def get_sensitivity() -> int: ...
def set_sensitivity(value: int) -> None: ...

sensitivity = property(get_sensitivity, set_sensitivity)

Default Value

0

Remarks

This property provides an indication of how sensitive it is to disclose the message to people other than the recipients of the message. When set, a Sensitivity header will added to the message. Possible values are as follows: esPersonal (1), esPrivate (2), and esCompanyConfidential (3).

signing_algorithm Property

This property includes a textual description of the signature hash algorithm.

Syntax

def get_signing_algorithm() -> str: ...
def set_signing_algorithm(value: str) -> None: ...

signing_algorithm = property(get_signing_algorithm, set_signing_algorithm)

Default Value

"SHA256"

Remarks

This property specifies the hash algorithm used to prepare the message digest for signature.

This property must contain either the name of the algorithm (such as MD5 or SHA1), or an object Id (OID) string representing the hash algorithm. Possible values are as follows:

• sha1
• md5
• sha-256 (default)
• sha-384
• sha-512
• sha-224

When read, the value of the property always contains the OID of the algorithm, or an empty string if the algorithm is unknown.

ssl_accept_server_cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_ssl_accept_server_cert_effective_date() -> str: ...

ssl_accept_server_cert_effective_date = property(get_ssl_accept_server_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

ssl_accept_server_cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_ssl_accept_server_cert_expiration_date() -> str: ...

ssl_accept_server_cert_expiration_date = property(get_ssl_accept_server_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

ssl_accept_server_cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_ssl_accept_server_cert_extended_key_usage() -> str: ...

ssl_accept_server_cert_extended_key_usage = property(get_ssl_accept_server_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

ssl_accept_server_cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_ssl_accept_server_cert_fingerprint() -> str: ...

ssl_accept_server_cert_fingerprint = property(get_ssl_accept_server_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

ssl_accept_server_cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_ssl_accept_server_cert_fingerprint_sha1() -> str: ...

ssl_accept_server_cert_fingerprint_sha1 = property(get_ssl_accept_server_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

ssl_accept_server_cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_ssl_accept_server_cert_fingerprint_sha256() -> str: ...

ssl_accept_server_cert_fingerprint_sha256 = property(get_ssl_accept_server_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

ssl_accept_server_cert_issuer Property

The issuer of the certificate.

Syntax

def get_ssl_accept_server_cert_issuer() -> str: ...

ssl_accept_server_cert_issuer = property(get_ssl_accept_server_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

ssl_accept_server_cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_ssl_accept_server_cert_private_key() -> str: ...

ssl_accept_server_cert_private_key = property(get_ssl_accept_server_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The ssl_accept_server_cert_private_key may be available but not exportable. In this case, ssl_accept_server_cert_private_key returns an empty string.

This property is read-only.

ssl_accept_server_cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_ssl_accept_server_cert_private_key_available() -> bool: ...

ssl_accept_server_cert_private_key_available = property(get_ssl_accept_server_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a ssl_accept_server_cert_private_key is available for the selected certificate. If ssl_accept_server_cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

ssl_accept_server_cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_ssl_accept_server_cert_private_key_container() -> str: ...

ssl_accept_server_cert_private_key_container = property(get_ssl_accept_server_cert_private_key_container, None)

Default Value

""

Remarks

The name of the ssl_accept_server_cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

ssl_accept_server_cert_public_key Property

The public key of the certificate.

Syntax

def get_ssl_accept_server_cert_public_key() -> str: ...

ssl_accept_server_cert_public_key = property(get_ssl_accept_server_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

ssl_accept_server_cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_ssl_accept_server_cert_public_key_algorithm() -> str: ...

ssl_accept_server_cert_public_key_algorithm = property(get_ssl_accept_server_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_accept_server_cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_ssl_accept_server_cert_public_key_length() -> int: ...

ssl_accept_server_cert_public_key_length = property(get_ssl_accept_server_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

ssl_accept_server_cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_ssl_accept_server_cert_serial_number() -> str: ...

ssl_accept_server_cert_serial_number = property(get_ssl_accept_server_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

ssl_accept_server_cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_ssl_accept_server_cert_signature_algorithm() -> str: ...

ssl_accept_server_cert_signature_algorithm = property(get_ssl_accept_server_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_accept_server_cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_ssl_accept_server_cert_store() -> bytes: ...
def set_ssl_accept_server_cert_store(value: bytes) -> None: ...

ssl_accept_server_cert_store = property(get_ssl_accept_server_cert_store, set_ssl_accept_server_cert_store)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The ssl_accept_server_cert_store_type property denotes the type of the certificate store specified by ssl_accept_server_cert_store. If the store is password-protected, specify the password in ssl_accept_server_cert_store_password.

ssl_accept_server_cert_store is used in conjunction with the ssl_accept_server_cert_subject property to specify client certificates. If ssl_accept_server_cert_store has a value, and ssl_accept_server_cert_subject or ssl_accept_server_cert_encoded is set, a search for a certificate is initiated. Please see the ssl_accept_server_cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

ssl_accept_server_cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_ssl_accept_server_cert_store_password() -> str: ...
def set_ssl_accept_server_cert_store_password(value: str) -> None: ...

ssl_accept_server_cert_store_password = property(get_ssl_accept_server_cert_store_password, set_ssl_accept_server_cert_store_password)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

ssl_accept_server_cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_ssl_accept_server_cert_store_type() -> int: ...
def set_ssl_accept_server_cert_store_type(value: int) -> None: ...

ssl_accept_server_cert_store_type = property(get_ssl_accept_server_cert_store_type, set_ssl_accept_server_cert_store_type)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

ssl_accept_server_cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_ssl_accept_server_cert_subject_alt_names() -> str: ...

ssl_accept_server_cert_subject_alt_names = property(get_ssl_accept_server_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_accept_server_cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_ssl_accept_server_cert_thumbprint_md5() -> str: ...

ssl_accept_server_cert_thumbprint_md5 = property(get_ssl_accept_server_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_accept_server_cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_ssl_accept_server_cert_thumbprint_sha1() -> str: ...

ssl_accept_server_cert_thumbprint_sha1 = property(get_ssl_accept_server_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_accept_server_cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_ssl_accept_server_cert_thumbprint_sha256() -> str: ...

ssl_accept_server_cert_thumbprint_sha256 = property(get_ssl_accept_server_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_accept_server_cert_usage Property

The text description of UsageFlags .

Syntax

def get_ssl_accept_server_cert_usage() -> str: ...

ssl_accept_server_cert_usage = property(get_ssl_accept_server_cert_usage, None)

Default Value

""

Remarks

The text description of ssl_accept_server_cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

ssl_accept_server_cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_ssl_accept_server_cert_usage_flags() -> int: ...

ssl_accept_server_cert_usage_flags = property(get_ssl_accept_server_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of ssl_accept_server_cert_usage_flags is a combination of the following flags:

Please see the ssl_accept_server_cert_usage property for a text representation of ssl_accept_server_cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

ssl_accept_server_cert_version Property

The certificate's version number.

Syntax

def get_ssl_accept_server_cert_version() -> str: ...

ssl_accept_server_cert_version = property(get_ssl_accept_server_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

ssl_accept_server_cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_ssl_accept_server_cert_subject() -> str: ...
def set_ssl_accept_server_cert_subject(value: str) -> None: ...

ssl_accept_server_cert_subject = property(get_ssl_accept_server_cert_subject, set_ssl_accept_server_cert_subject)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

ssl_accept_server_cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_ssl_accept_server_cert_encoded() -> bytes: ...
def set_ssl_accept_server_cert_encoded(value: bytes) -> None: ...

ssl_accept_server_cert_encoded = property(get_ssl_accept_server_cert_encoded, set_ssl_accept_server_cert_encoded)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The ssl_accept_server_cert_store and ssl_accept_server_cert_subject properties also may be used to specify a certificate.

When ssl_accept_server_cert_encoded is set, a search is initiated in the current ssl_accept_server_cert_store for the private key of the certificate. If the key is found, ssl_accept_server_cert_subject is updated to reflect the full subject of the selected certificate; otherwise, ssl_accept_server_cert_subject is set to an empty string.

ssl_cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_ssl_cert_effective_date() -> str: ...

ssl_cert_effective_date = property(get_ssl_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

ssl_cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_ssl_cert_expiration_date() -> str: ...

ssl_cert_expiration_date = property(get_ssl_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

ssl_cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_ssl_cert_extended_key_usage() -> str: ...

ssl_cert_extended_key_usage = property(get_ssl_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

ssl_cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_ssl_cert_fingerprint() -> str: ...

ssl_cert_fingerprint = property(get_ssl_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

ssl_cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_ssl_cert_fingerprint_sha1() -> str: ...

ssl_cert_fingerprint_sha1 = property(get_ssl_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

ssl_cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_ssl_cert_fingerprint_sha256() -> str: ...

ssl_cert_fingerprint_sha256 = property(get_ssl_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

ssl_cert_issuer Property

The issuer of the certificate.

Syntax

def get_ssl_cert_issuer() -> str: ...

ssl_cert_issuer = property(get_ssl_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

ssl_cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_ssl_cert_private_key() -> str: ...

ssl_cert_private_key = property(get_ssl_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The ssl_cert_private_key may be available but not exportable. In this case, ssl_cert_private_key returns an empty string.

This property is read-only.

ssl_cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_ssl_cert_private_key_available() -> bool: ...

ssl_cert_private_key_available = property(get_ssl_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a ssl_cert_private_key is available for the selected certificate. If ssl_cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

ssl_cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_ssl_cert_private_key_container() -> str: ...

ssl_cert_private_key_container = property(get_ssl_cert_private_key_container, None)

Default Value

""

Remarks

The name of the ssl_cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

ssl_cert_public_key Property

The public key of the certificate.

Syntax

def get_ssl_cert_public_key() -> str: ...

ssl_cert_public_key = property(get_ssl_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

ssl_cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_ssl_cert_public_key_algorithm() -> str: ...

ssl_cert_public_key_algorithm = property(get_ssl_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_ssl_cert_public_key_length() -> int: ...

ssl_cert_public_key_length = property(get_ssl_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

ssl_cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_ssl_cert_serial_number() -> str: ...

ssl_cert_serial_number = property(get_ssl_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

ssl_cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_ssl_cert_signature_algorithm() -> str: ...

ssl_cert_signature_algorithm = property(get_ssl_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_ssl_cert_store() -> bytes: ...
def set_ssl_cert_store(value: bytes) -> None: ...

ssl_cert_store = property(get_ssl_cert_store, set_ssl_cert_store)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The ssl_cert_store_type property denotes the type of the certificate store specified by ssl_cert_store. If the store is password-protected, specify the password in ssl_cert_store_password.

ssl_cert_store is used in conjunction with the ssl_cert_subject property to specify client certificates. If ssl_cert_store has a value, and ssl_cert_subject or ssl_cert_encoded is set, a search for a certificate is initiated. Please see the ssl_cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

ssl_cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_ssl_cert_store_password() -> str: ...
def set_ssl_cert_store_password(value: str) -> None: ...

ssl_cert_store_password = property(get_ssl_cert_store_password, set_ssl_cert_store_password)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

ssl_cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_ssl_cert_store_type() -> int: ...
def set_ssl_cert_store_type(value: int) -> None: ...

ssl_cert_store_type = property(get_ssl_cert_store_type, set_ssl_cert_store_type)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

ssl_cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_ssl_cert_subject_alt_names() -> str: ...

ssl_cert_subject_alt_names = property(get_ssl_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_md5() -> str: ...

ssl_cert_thumbprint_md5 = property(get_ssl_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_sha1() -> str: ...

ssl_cert_thumbprint_sha1 = property(get_ssl_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_ssl_cert_thumbprint_sha256() -> str: ...

ssl_cert_thumbprint_sha256 = property(get_ssl_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_cert_usage Property

The text description of UsageFlags .

Syntax

def get_ssl_cert_usage() -> str: ...

ssl_cert_usage = property(get_ssl_cert_usage, None)

Default Value

""

Remarks

The text description of ssl_cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

ssl_cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_ssl_cert_usage_flags() -> int: ...

ssl_cert_usage_flags = property(get_ssl_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of ssl_cert_usage_flags is a combination of the following flags:

Please see the ssl_cert_usage property for a text representation of ssl_cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

ssl_cert_version Property

The certificate's version number.

Syntax

def get_ssl_cert_version() -> str: ...

ssl_cert_version = property(get_ssl_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

ssl_cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_ssl_cert_subject() -> str: ...
def set_ssl_cert_subject(value: str) -> None: ...

ssl_cert_subject = property(get_ssl_cert_subject, set_ssl_cert_subject)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

ssl_cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_ssl_cert_encoded() -> bytes: ...
def set_ssl_cert_encoded(value: bytes) -> None: ...

ssl_cert_encoded = property(get_ssl_cert_encoded, set_ssl_cert_encoded)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The ssl_cert_store and ssl_cert_subject properties also may be used to specify a certificate.

When ssl_cert_encoded is set, a search is initiated in the current ssl_cert_store for the private key of the certificate. If the key is found, ssl_cert_subject is updated to reflect the full subject of the selected certificate; otherwise, ssl_cert_subject is set to an empty string.

ssl_enabled Property

This property indicates whether Transport Layer Security/Secure Sockets Layer (TLS/SSL) is enabled.

Syntax

def get_ssl_enabled() -> bool: ...
def set_ssl_enabled(value: bool) -> None: ...

ssl_enabled = property(get_ssl_enabled, set_ssl_enabled)

Default Value

FALSE

Remarks

This property specifies whether TLS/SSL is enabled in the class. When False (default), the class operates in plaintext mode. When True, TLS/SSL is enabled.

TLS/SSL may also be enabled by setting ssl_start_mode. Setting ssl_start_mode will automatically update this property value.

ssl_provider Property

The Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use.

Syntax

def get_ssl_provider() -> int: ...
def set_ssl_provider(value: int) -> None: ...

ssl_provider = property(get_ssl_provider, set_ssl_provider)

Default Value

0

Remarks

This property specifies the SSL/TLS implementation to use. In most cases the default value of 0 (Automatic) is recommended and should not be changed. When set to 0 (Automatic), the class will select whether to use the platform implementation or the internal implementation depending on the operating system as well as the TLS version being used.

Possible values are as follows:

In most cases using the default value (Automatic) is recommended. The class will select a provider depending on the current platform.

When Automatic is selected, on Windows, the class will use the platform implementation. On Linux/macOS, the class will use the internal implementation. When TLS 1.3 is enabled via SSLEnabledProtocols, the internal implementation is used on all platforms.

ssl_server_cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_ssl_server_cert_effective_date() -> str: ...

ssl_server_cert_effective_date = property(get_ssl_server_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

ssl_server_cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_ssl_server_cert_expiration_date() -> str: ...

ssl_server_cert_expiration_date = property(get_ssl_server_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

ssl_server_cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_ssl_server_cert_extended_key_usage() -> str: ...

ssl_server_cert_extended_key_usage = property(get_ssl_server_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

ssl_server_cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_ssl_server_cert_fingerprint() -> str: ...

ssl_server_cert_fingerprint = property(get_ssl_server_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

ssl_server_cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_ssl_server_cert_fingerprint_sha1() -> str: ...

ssl_server_cert_fingerprint_sha1 = property(get_ssl_server_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

ssl_server_cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_ssl_server_cert_fingerprint_sha256() -> str: ...

ssl_server_cert_fingerprint_sha256 = property(get_ssl_server_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

ssl_server_cert_issuer Property

The issuer of the certificate.

Syntax

def get_ssl_server_cert_issuer() -> str: ...

ssl_server_cert_issuer = property(get_ssl_server_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

ssl_server_cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_ssl_server_cert_private_key() -> str: ...

ssl_server_cert_private_key = property(get_ssl_server_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The ssl_server_cert_private_key may be available but not exportable. In this case, ssl_server_cert_private_key returns an empty string.

This property is read-only.

ssl_server_cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_ssl_server_cert_private_key_available() -> bool: ...

ssl_server_cert_private_key_available = property(get_ssl_server_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a ssl_server_cert_private_key is available for the selected certificate. If ssl_server_cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

ssl_server_cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_ssl_server_cert_private_key_container() -> str: ...

ssl_server_cert_private_key_container = property(get_ssl_server_cert_private_key_container, None)

Default Value

""

Remarks

The name of the ssl_server_cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

ssl_server_cert_public_key Property

The public key of the certificate.

Syntax

def get_ssl_server_cert_public_key() -> str: ...

ssl_server_cert_public_key = property(get_ssl_server_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

ssl_server_cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_ssl_server_cert_public_key_algorithm() -> str: ...

ssl_server_cert_public_key_algorithm = property(get_ssl_server_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_server_cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_ssl_server_cert_public_key_length() -> int: ...

ssl_server_cert_public_key_length = property(get_ssl_server_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

ssl_server_cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_ssl_server_cert_serial_number() -> str: ...

ssl_server_cert_serial_number = property(get_ssl_server_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

ssl_server_cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_ssl_server_cert_signature_algorithm() -> str: ...

ssl_server_cert_signature_algorithm = property(get_ssl_server_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

ssl_server_cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_ssl_server_cert_store() -> bytes: ...

ssl_server_cert_store = property(get_ssl_server_cert_store, None)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The ssl_server_cert_store_type property denotes the type of the certificate store specified by ssl_server_cert_store. If the store is password-protected, specify the password in ssl_server_cert_store_password.

ssl_server_cert_store is used in conjunction with the ssl_server_cert_subject property to specify client certificates. If ssl_server_cert_store has a value, and ssl_server_cert_subject or ssl_server_cert_encoded is set, a search for a certificate is initiated. Please see the ssl_server_cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

This property is read-only.

ssl_server_cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_ssl_server_cert_store_password() -> str: ...

ssl_server_cert_store_password = property(get_ssl_server_cert_store_password, None)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

This property is read-only.

ssl_server_cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_ssl_server_cert_store_type() -> int: ...

ssl_server_cert_store_type = property(get_ssl_server_cert_store_type, None)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

This property is read-only.

ssl_server_cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_ssl_server_cert_subject_alt_names() -> str: ...

ssl_server_cert_subject_alt_names = property(get_ssl_server_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

ssl_server_cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_md5() -> str: ...

ssl_server_cert_thumbprint_md5 = property(get_ssl_server_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_server_cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_sha1() -> str: ...

ssl_server_cert_thumbprint_sha1 = property(get_ssl_server_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_server_cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_ssl_server_cert_thumbprint_sha256() -> str: ...

ssl_server_cert_thumbprint_sha256 = property(get_ssl_server_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

ssl_server_cert_usage Property

The text description of UsageFlags .

Syntax

def get_ssl_server_cert_usage() -> str: ...

ssl_server_cert_usage = property(get_ssl_server_cert_usage, None)

Default Value

""

Remarks

The text description of ssl_server_cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

ssl_server_cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_ssl_server_cert_usage_flags() -> int: ...

ssl_server_cert_usage_flags = property(get_ssl_server_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of ssl_server_cert_usage_flags is a combination of the following flags:

Please see the ssl_server_cert_usage property for a text representation of ssl_server_cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

ssl_server_cert_version Property

The certificate's version number.

Syntax

def get_ssl_server_cert_version() -> str: ...

ssl_server_cert_version = property(get_ssl_server_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

ssl_server_cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_ssl_server_cert_subject() -> str: ...

ssl_server_cert_subject = property(get_ssl_server_cert_subject, None)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

This property is read-only.

ssl_server_cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_ssl_server_cert_encoded() -> bytes: ...

ssl_server_cert_encoded = property(get_ssl_server_cert_encoded, None)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The ssl_server_cert_store and ssl_server_cert_subject properties also may be used to specify a certificate.

When ssl_server_cert_encoded is set, a search is initiated in the current ssl_server_cert_store for the private key of the certificate. If the key is found, ssl_server_cert_subject is updated to reflect the full subject of the selected certificate; otherwise, ssl_server_cert_subject is set to an empty string.

This property is read-only.

ssl_start_mode Property

This property determines how the class starts the Secure Sockets Layer (SSL) negotiation.

Syntax

def get_ssl_start_mode() -> int: ...
def set_ssl_start_mode(value: int) -> None: ...

ssl_start_mode = property(get_ssl_start_mode, set_ssl_start_mode)

Default Value

3

Remarks

The ssl_start_mode property may have one of the following values:

subject Property

This property includes the subject of the mail message (optional).

Syntax

def get_subject() -> str: ...
def set_subject(value: str) -> None: ...

subject = property(get_subject, set_subject)

Default Value

""

Remarks

The string in this property is sent with a Subject SMTP header to the mail recipient.

If the resulting header is longer than MaxHeaderLength, then it is folded according to RFC 822 specifications.

timeout Property

The timeout for the class.

Syntax

def get_timeout() -> int: ...
def set_timeout(value: int) -> None: ...

timeout = property(get_timeout, set_timeout)

Default Value

60

Remarks

If the timeout property is set to 0, all operations will run uninterrupted until successful completion or an error condition is encountered.

If timeout is set to a positive value, the class will wait for the operation to complete before returning control.

The class will use do_events to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not freeze and remains responsive.

If timeout expires, and the operation is not yet complete, the class fails with an error.

Note: By default, all timeouts are inactivity timeouts, that is, the timeout period is extended by timeout seconds when any amount of data is successfully sent or received.

The default value for the timeout property is 60 seconds.

user Property

This property includes the user identifier needed to log in as in the MailServer .

Syntax

def get_user() -> str: ...
def set_user(value: str) -> None: ...

user = property(get_user, set_user)

Default Value

""

Remarks

If this property is set to a nonempty string, then when connecting to the mail_server an AUTH or CRAM-MD5 (depending on the value of auth_mechanism) command is sent to provide authentication information for the user.

add_recipient_cert Method

This method is used to add recipient certificates used to encrypt messages.

Syntax

def add_recipient_cert(cert_encoded: bytes) -> None: ...

Remarks

This method is used to add recipient certificates to the internal message_recipients properties used to encrypt the message. The recipient certificate must be a valid PKCS-encoded certificate. If the certificate provided is Base64 encoded, it will be decoded first by the object.

The CertMgr class may be used to retrieve the appropriate certificate from the system.

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

connect Method

This method connects to the mail relay and sends the SMTP HELO command.

Syntax

def connect() -> None: ...

Remarks

This method connects to the mail relay and sends the SMTP HELO command, thus preparing to send messages. Any number of messages can later be sent using the send method.

Example. Connecting and Sending an Email:

control.MailServer = "MyServer" control.From = "me@server.com" control.SendTo = "recipient@server.com" control.Subject = "My Subject" control.MessageText = "This is the message body" control.Connect() control.Send() control.Disconnect()

disconnect Method

This method disconnects from the SMTP server.

Syntax

def disconnect() -> None: ...

Remarks

This method disconnects from the mail relay.

do_events Method

This method processes events from the internal message queue.

Syntax

def do_events() -> None: ...

Remarks

When do_events is called, the class processes any available events. If no events are available, it waits for a preset period of time, and then returns.

encrypt Method

This method encrypts the message.

Syntax

def encrypt() -> None: ...

Remarks

This method encrypts the input message in a Public Key Cryptography Standards (PKCS)-encoded envelope with all of the recipient certificates specified in the message_recipients properties.

Note: The message headers, including the Sender, Recipient(s), and Subject, are not encrypted. If this is sensitive information, consider including these headers in the message body as a MIME entity, and providing other headers for the S/MIME wrapper.

expand Method

This method asks the MailServer to expand a name or mailing list.

Syntax

def expand(email_address: str) -> None: ...

Remarks

This method asks the mail_server to expand a name or mailing list. The resulting response is provided in one or more on_expand events (one for each address). The class will try to connect to the mail relay if it is not already connected.

interrupt Method

This method interrupts the current method.

Syntax

def interrupt() -> None: ...

Remarks

If there is no method in progress, interrupt simply returns, doing nothing.

process_queue Method

This method sends the messages that previously have been queued into QueueDir .

Syntax

def process_queue(queue_dir: str) -> None: ...

Remarks

This method sends the messages that previously have been queued into QueueDir. The on_pi_trail event shows the interaction with the server as messages are processed.

This method looks in the directory for files with the extension ".queued" and starts processing them.

When processing starts, the file extension is changed to ".sending". If an error happens at this stage, the sending process is aborted, and the file extension is changed to ".failed".

If the file is successfully sent, the file is normally deleted, unless the KeepQueue configuration setting is set to True, in which case the file extension is instead changed to ".sent" and the queue file is not deleted.

queue Method

This method queues the message into QueueDir .

Syntax

def queue(queue_dir: str) -> str: ...

Remarks

This method queues the message into QueueDir. The message is queued into a unique file into the directory QueueDir for future processing.

QueueDir must already exist, or an error will be generated. Alternatively, QueueDir may be set to "*" to return the result as a string instead of writing it to a file.

This method returns the name of the unique queue file created in QueueDir. The file extension is ".queued".

Please refer to the process_queue method for more information on email queue processing.

reset Method

This method will reset the class.

Syntax

def reset() -> None: ...

Remarks

This method will reset the class's properties to their default values.

reset_headers Method

This method resets all the message headers to empty.

Syntax

def reset_headers() -> None: ...

Remarks

This method resets all the message headers to "" (empty string). Use this method before creating a new message, so that headers from the previous message are not carried over to the next one.

send Method

This method sends the current message.

Syntax

def send() -> None: ...

Remarks

This method sends the current message. If the class is not connected to the mail relay, a connection is created, the message is sent, and then the connection is closed unless an error occurs.

If the class is already connected (by use of the connect method), the connection will remain open after the message is sent. To disconnect, call the disconnect method.

Example. Send an Email:

SMTPControl.MailServer = "MyServer" SMTPControl.From = "me@server.com" SMTPControl.SendTo = "recipient@server.com" SMTPControl.Subject = "My Subject" SMTPControl.MessageText = "This is the message body" SMTPControl.Send()

send_command Method

This method sends the exact command directly to the server.

Syntax

def send_command(command: str) -> None: ...

Remarks

This method sends the command specified by Command to the server exactly as it is provided. Use this method to send additional or custom commands directly to the server.

After calling this method, check the last_reply property or monitor the on_pi_trail event to obtain the server's response.

send_to_terminal_and_email Method

This method sends to terminal and email.

Syntax

def send_to_terminal_and_email() -> None: ...

Remarks

This method is similar to send but requests also that the message is sent to the terminal of the users as well, if they are logged on and accept terminal messages. This method requires that allow_extensions is set to True and is not supported by all mail relays.

send_to_terminal_only Method

This method sends to terminal only.

Syntax

def send_to_terminal_only() -> None: ...

Remarks

This method is similar to Send but requests instead that the message is sent to the user's terminal. An error code with the server's response is returned if the user is not logged in or does not accept terminal messages. This method requires that allow_extensions is set to True and is not supported by all mail relays.

send_to_terminal_or_email Method

This method sends to terminal or email.

Syntax

def send_to_terminal_or_email() -> None: ...

Remarks

This method is similar to send but requests instead that the message is first sent to the user's terminal. If the user is not logged in or does not accept terminal messages, the message is sent to his or her mailbox. This method requires that allow_extensions is set to True and is not supported by all mail relays.

sign Method

This method signs the current message.

Syntax

def sign() -> None: ...

Remarks

This method digitally signs the input data with the certificate provided. Certificates are provided by specifying the certificate property. The include_certificate property allows you to specify whether to include the certificate when signing the message.

sign_and_encrypt Method

This method signs and encrypts the current message.

Syntax

def sign_and_encrypt() -> None: ...

Remarks

This method both signs and encrypts the input message into a single PKCS-encoded envelope.

Note: The message headers, including the Sender, Recipient(s), and Subject, are not encrypted. If this is sensitive information, consider including these headers in the message body as a MIME entity, and providing other headers for the S/MIME wrapper.

verify Method

This method sends a verification request to the SMTP server.

Syntax

def verify(email_address: str) -> None: ...

Remarks

This method asks the mail_server to verify the email address provided in the 'EmailAddress' parameter.

on_connection_status Event

Fired to indicate changes in the connection state.

Syntax

class SSMTPConnectionStatusEventParams(object):
  @property
  def connection_event() -> str: ...

  @property
  def status_code() -> int: ...

  @property
  def description() -> str: ...

# In class SSMTP:
@property
def on_connection_status() -> Callable[[SSMTPConnectionStatusEventParams], None]: ...
@on_connection_status.setter
def on_connection_status(event_hook: Callable[[SSMTPConnectionStatusEventParams], None]) -> None: ...

Remarks

This event is fired when the connection state changes: for example, completion of a firewall or proxy connection or completion of a security handshake.

The ConnectionEvent parameter indicates the type of connection event. Values may include the following:

on_end_transfer Event

This event is fired when the message text completes transferring.

Syntax

class SSMTPEndTransferEventParams(object):
  @property
  def direction() -> int: ...

# In class SSMTP:
@property
def on_end_transfer() -> Callable[[SSMTPEndTransferEventParams], None]: ...
@on_end_transfer.setter
def on_end_transfer(event_hook: Callable[[SSMTPEndTransferEventParams], None]) -> None: ...

Remarks

If message_text is not empty, the on_end_transfer event is fired when the message_text finishes transferring from the local host to the mail_server. If message_text is empty, the event is not fired.

If a file is attached to the message_text via the attached_file property, then on_end_transfer fires again when the file finishes transferring. For more information, go to the description of the attached_file property.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

on_error Event

Fired when information is available about errors during data delivery.

Syntax

class SSMTPErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class SSMTP:
@property
def on_error() -> Callable[[SSMTPErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[SSMTPErrorEventParams], None]) -> None: ...

Remarks

The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

on_expand Event

This event is fired for every email address returned by the server when the Expand method is called.

Syntax

class SSMTPExpandEventParams(object):
  @property
  def address() -> str: ...

# In class SSMTP:
@property
def on_expand() -> Callable[[SSMTPExpandEventParams], None]: ...
@on_expand.setter
def on_expand(event_hook: Callable[[SSMTPExpandEventParams], None]) -> None: ...

Remarks

This event is fired for every email address as returned by the mail server when the expand method is called.

The Address parameter may contain a name and an email address, or just an email address, suitable for any of the addressing properties.

on_pi_trail Event

This event traces the commands sent to the mail server, and the respective replies.

Syntax

class SSMTPPITrailEventParams(object):
  @property
  def direction() -> int: ...

  @property
  def message() -> str: ...

# In class SSMTP:
@property
def on_pi_trail() -> Callable[[SSMTPPITrailEventParams], None]: ...
@on_pi_trail.setter
def on_pi_trail(event_hook: Callable[[SSMTPPITrailEventParams], None]) -> None: ...

Remarks

The on_pi_trail event is useful for debugging purposes. It shows all of the interaction between the client and the server, line by line, except for message header and body transfers.

The Message parameter contains the full text of the message. The Direction parameter shows the originator of the message:

on_ssl_server_authentication Event

Fired after the server presents its certificate to the client.

Syntax

class SSMTPSSLServerAuthenticationEventParams(object):
  @property
  def cert_encoded() -> bytes: ...

  @property
  def cert_subject() -> str: ...

  @property
  def cert_issuer() -> str: ...

  @property
  def status() -> str: ...

  @property
  def accept() -> bool: ...
  @accept.setter
  def accept(value) -> None: ...

# In class SSMTP:
@property
def on_ssl_server_authentication() -> Callable[[SSMTPSSLServerAuthenticationEventParams], None]: ...
@on_ssl_server_authentication.setter
def on_ssl_server_authentication(event_hook: Callable[[SSMTPSSLServerAuthenticationEventParams], None]) -> None: ...

Remarks

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to True.

on_ssl_status Event

Fired when secure connection progress messages are available.

Syntax

class SSMTPSSLStatusEventParams(object):
  @property
  def message() -> str: ...

# In class SSMTP:
@property
def on_ssl_status() -> Callable[[SSMTPSSLStatusEventParams], None]: ...
@on_ssl_status.setter
def on_ssl_status(event_hook: Callable[[SSMTPSSLStatusEventParams], None]) -> None: ...

Remarks

The event is fired for informational and logging purposes only. This event tracks the progress of the connection.

on_start_transfer Event

This event is fired when the message text starts transferring.

Syntax

class SSMTPStartTransferEventParams(object):
  @property
  def direction() -> int: ...

# In class SSMTP:
@property
def on_start_transfer() -> Callable[[SSMTPStartTransferEventParams], None]: ...
@on_start_transfer.setter
def on_start_transfer(event_hook: Callable[[SSMTPStartTransferEventParams], None]) -> None: ...

Remarks

If message_text is not empty, the on_start_transfer event is fired when the message_text starts transferring from the local host to the mail_server. If message_text is empty, the event is not fired.

If a file is attached to the message_text via the attached_file property, then on_start_transfer fires again when the file starts transferring. Please go to the description of the attached_file property for more information.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

on_transfer Event

This event is fired when the message text is transferred to MailServer .

Syntax

class SSMTPTransferEventParams(object):
  @property
  def direction() -> int: ...

  @property
  def bytes_transferred() -> int: ...

  @property
  def percent_done() -> int: ...

  @property
  def text() -> bytes: ...

# In class SSMTP:
@property
def on_transfer() -> Callable[[SSMTPTransferEventParams], None]: ...
@on_transfer.setter
def on_transfer(event_hook: Callable[[SSMTPTransferEventParams], None]) -> None: ...

Remarks

One or more on_transfer events are fired during message delivery. Messages consist of message_text and an optional attached_file. The BytesTransferred parameter shows the number of bytes sent starting from the beginning of message_text or attached_file.

Text contains the current portion of the message being sent.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

The PercentDone parameter shows the progress of the transfer in the corresponding direction. If PercentDone can not be calculated the value will be -1.

Note: Events are not re-entrant. Performing time-consuming operations within this event will prevent it from firing again in a timely manner and may affect overall performance.

SSMTP Config Settings

SMTP Config Settings

TCPClient Config Settings

SSL Config Settings

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert ...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert ...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert ...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert ...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
... Intermediate Cert...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
... Root Cert...
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

Socket Config Settings

Base Config Settings

SSMTP Errors

SMTP Errors

The class may also return one of the following error codes, which are inherited from other classes.

TCPClient Errors

SSL Errors

TCP/IP Errors