SMTPClient Component

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The SMTPClient component provides client-side functionality for SMTP (Simple Mail Transfer Protocol).

Syntax

TsbxSMTPClient

Remarks

Use this component to send e-mails from your application.

You can connect to an SMTP server using either username/password or with an access token. // Connect using username/password SMTPClient client = new SMTPClient(); client.Username = "user"; client.Password = "password"; client.Connect("mail.domain.com", 465); client.SendFile("path\\message.eml"); client.Disconnect(); // Connect using an access token (note that the username should be the same as the one used to obtain the access token) SMTPClient client = new SMTPClient(); client.Username = "user"; client.AccessToken = access_token; client.Connect("smtp.gmail.com", 587); client.SendBytes(buffer); client.Disconnect(); // To send messages without authentication, switch off ForceLogin config property SMTPClient client = new SMTPClient(); client.Config("ForceLogin=false"); client.Connect("smtp.myisp.net", 25); client.SendBytes(buffer); client.Disconnect();

Use Command and CommandReply events to get a session log. SMTPClient client = new SMTPClient(); client.OnCommand += delegate (Object sender, SMTPClientCommandEventArgs e) { Console.WriteLine($"C: {e.Cmd}"); }; client.OnCommandReply += delegate (Object sender, SMTPClientCommandReplyEventArgs e) { Console.WriteLine($"S: {e.Reply}"); };

Property List

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

Method List

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

Event List

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

Config Settings

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

AccessToken Property (SMTPClient Component)

An OAuth 2.0 access token to authenticate to the server.

Syntax

__property String AccessToken = { read=FAccessToken, write=FSetAccessToken };

Default Value

""

Remarks

Use this property to provide the access token to be used to authenticate to the destination server.

Data Type

String

BlockedCertCount Property (SMTPClient Component)

The number of records in the BlockedCert arrays.

Syntax

__property int BlockedCertCount = { read=FBlockedCertCount, write=FSetBlockedCertCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• BlockedCertBytes
• BlockedCertHandle

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

This property is not available at design time.

Data Type

Integer

BlockedCertBytes Property (SMTPClient Component)

Returns the raw certificate data in DER format.

Syntax

__property DynamicArray BlockedCertBytes[int BlockedCertIndex] = { read=FBlockedCertBytes };

Remarks

Returns the raw certificate data in DER format.

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

BlockedCertHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 BlockedCertHandle[int BlockedCertIndex] = { read=FBlockedCertHandle, write=FSetBlockedCertHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The BlockedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the BlockedCertCount property.

This property is not available at design time.

Data Type

Long64

ConnInfoAEADCipher Property (SMTPClient Component)

Indicates whether the encryption algorithm used is an AEAD cipher.

Syntax

__property bool ConnInfoAEADCipher = { read=FConnInfoAEADCipher };

Default Value

false

Remarks

Indicates whether the encryption algorithm used is an AEAD cipher.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoChainValidationDetails Property (SMTPClient Component)

The details of a certificate chain validation outcome.

Syntax

__property int ConnInfoChainValidationDetails = { read=FConnInfoChainValidationDetails };

Default Value

0

Remarks

The details of a certificate chain validation outcome. They may often suggest the reasons that contributed to the overall validation result.

Returns a bit mask of the following options:

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoChainValidationResult Property (SMTPClient Component)

The outcome of a certificate chain validation routine.

Syntax

__property TsbxSMTPClientConnInfoChainValidationResults ConnInfoChainValidationResult = { read=FConnInfoChainValidationResult };

enum TsbxSMTPClientConnInfoChainValidationResults {
  cvtValid=0,
  cvtValidButUntrusted=1,
  cvtInvalid=2,
  cvtCantBeEstablished=3
};

Default Value

cvtValid

Remarks

The outcome of a certificate chain validation routine.

Available options:

Use the ValidationLog property to access the detailed validation log.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoCiphersuite Property (SMTPClient Component)

The cipher suite employed by this connection.

Syntax

__property String ConnInfoCiphersuite = { read=FConnInfoCiphersuite };

Default Value

""

Remarks

The cipher suite employed by this connection.

For TLS connections, this property returns the ciphersuite that was/is employed by the connection.

This property is read-only and not available at design time.

Data Type

String

ConnInfoClientAuthenticated Property (SMTPClient Component)

Specifies whether client authentication was performed during this connection.

Syntax

__property bool ConnInfoClientAuthenticated = { read=FConnInfoClientAuthenticated };

Default Value

false

Remarks

Specifies whether client authentication was performed during this connection.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoClientAuthRequested Property (SMTPClient Component)

Specifies whether client authentication was requested during this connection.

Syntax

__property bool ConnInfoClientAuthRequested = { read=FConnInfoClientAuthRequested };

Default Value

false

Remarks

Specifies whether client authentication was requested during this connection.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoConnectionEstablished Property (SMTPClient Component)

Indicates whether the connection has been established fully.

Syntax

__property bool ConnInfoConnectionEstablished = { read=FConnInfoConnectionEstablished };

Default Value

false

Remarks

Indicates whether the connection has been established fully.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoConnectionID Property (SMTPClient Component)

The unique identifier assigned to this connection.

Syntax

__property DynamicArray ConnInfoConnectionID = { read=FConnInfoConnectionID };

Remarks

The unique identifier assigned to this connection.

This property is read-only and not available at design time.

Data Type

Byte Array

ConnInfoDigestAlgorithm Property (SMTPClient Component)

The digest algorithm used in a TLS-enabled connection.

Syntax

__property String ConnInfoDigestAlgorithm = { read=FConnInfoDigestAlgorithm };

Default Value

""

Remarks

The digest algorithm used in a TLS-enabled connection.

This property is read-only and not available at design time.

Data Type

String

ConnInfoEncryptionAlgorithm Property (SMTPClient Component)

The symmetric encryption algorithm used in a TLS-enabled connection.

Syntax

__property String ConnInfoEncryptionAlgorithm = { read=FConnInfoEncryptionAlgorithm };

Default Value

""

Remarks

The symmetric encryption algorithm used in a TLS-enabled connection.

This property is read-only and not available at design time.

Data Type

String

ConnInfoExportable Property (SMTPClient Component)

Indicates whether a TLS connection uses a reduced-strength exportable cipher.

Syntax

__property bool ConnInfoExportable = { read=FConnInfoExportable };

Default Value

false

Remarks

Indicates whether a TLS connection uses a reduced-strength exportable cipher.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoID Property (SMTPClient Component)

The client connection's unique identifier.

Syntax

__property __int64 ConnInfoID = { read=FConnInfoID };

Default Value

-1

Remarks

The client connection's unique identifier. This value is used throughout to refer to a particular client connection.

This property is read-only and not available at design time.

Data Type

Long64

ConnInfoKeyExchangeAlgorithm Property (SMTPClient Component)

The key exchange algorithm used in a TLS-enabled connection.

Syntax

__property String ConnInfoKeyExchangeAlgorithm = { read=FConnInfoKeyExchangeAlgorithm };

Default Value

""

Remarks

The key exchange algorithm used in a TLS-enabled connection.

This property is read-only and not available at design time.

Data Type

String

ConnInfoKeyExchangeKeyBits Property (SMTPClient Component)

The length of the key exchange key of a TLS-enabled connection.

Syntax

__property int ConnInfoKeyExchangeKeyBits = { read=FConnInfoKeyExchangeKeyBits };

Default Value

0

Remarks

The length of the key exchange key of a TLS-enabled connection.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoNamedECCurve Property (SMTPClient Component)

The elliptic curve used in this connection.

Syntax

__property String ConnInfoNamedECCurve = { read=FConnInfoNamedECCurve };

Default Value

""

Remarks

The elliptic curve used in this connection.

This property is read-only and not available at design time.

Data Type

String

ConnInfoPFSCipher Property (SMTPClient Component)

Indicates whether the chosen ciphersuite provides perfect forward secrecy (PFS).

Syntax

__property bool ConnInfoPFSCipher = { read=FConnInfoPFSCipher };

Default Value

false

Remarks

Indicates whether the chosen ciphersuite provides perfect forward secrecy (PFS).

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoPreSharedIdentity Property (SMTPClient Component)

Specifies the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

Syntax

__property String ConnInfoPreSharedIdentity = { read=FConnInfoPreSharedIdentity };

Default Value

""

Remarks

Specifies the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

This property is read-only and not available at design time.

Data Type

String

ConnInfoPreSharedIdentityHint Property (SMTPClient Component)

A hint professed by the server to help the client select the PSK identity to use.

Syntax

__property String ConnInfoPreSharedIdentityHint = { read=FConnInfoPreSharedIdentityHint };

Default Value

""

Remarks

A hint professed by the server to help the client select the PSK identity to use.

This property is read-only and not available at design time.

Data Type

String

ConnInfoPublicKeyBits Property (SMTPClient Component)

The length of the public key.

Syntax

__property int ConnInfoPublicKeyBits = { read=FConnInfoPublicKeyBits };

Default Value

0

Remarks

The length of the public key.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoRemoteAddress Property (SMTPClient Component)

The client's IP address.

Syntax

__property String ConnInfoRemoteAddress = { read=FConnInfoRemoteAddress };

Default Value

""

Remarks

The client's IP address.

This property is read-only and not available at design time.

Data Type

String

ConnInfoRemotePort Property (SMTPClient Component)

The remote port of the client connection.

Syntax

__property int ConnInfoRemotePort = { read=FConnInfoRemotePort };

Default Value

0

Remarks

The remote port of the client connection.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoResumedSession Property (SMTPClient Component)

Indicates whether a TLS-enabled connection was spawned from another TLS connection.

Syntax

__property bool ConnInfoResumedSession = { read=FConnInfoResumedSession };

Default Value

false

Remarks

Indicates whether a TLS-enabled connection was spawned from another TLS connection

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoSecureConnection Property (SMTPClient Component)

Indicates whether TLS or SSL is enabled for this connection.

Syntax

__property bool ConnInfoSecureConnection = { read=FConnInfoSecureConnection };

Default Value

false

Remarks

Indicates whether TLS or SSL is enabled for this connection.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoServerAuthenticated Property (SMTPClient Component)

Indicates whether server authentication was performed during a TLS-enabled connection.

Syntax

__property bool ConnInfoServerAuthenticated = { read=FConnInfoServerAuthenticated };

Default Value

false

Remarks

Indicates whether server authentication was performed during a TLS-enabled connection.

This property is read-only and not available at design time.

Data Type

Boolean

ConnInfoSignatureAlgorithm Property (SMTPClient Component)

The signature algorithm used in a TLS handshake.

Syntax

__property String ConnInfoSignatureAlgorithm = { read=FConnInfoSignatureAlgorithm };

Default Value

""

Remarks

The signature algorithm used in a TLS handshake.

This property is read-only and not available at design time.

Data Type

String

ConnInfoSymmetricBlockSize Property (SMTPClient Component)

The block size of the symmetric algorithm used.

Syntax

__property int ConnInfoSymmetricBlockSize = { read=FConnInfoSymmetricBlockSize };

Default Value

0

Remarks

The block size of the symmetric algorithm used.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoSymmetricKeyBits Property (SMTPClient Component)

The key length of the symmetric algorithm used.

Syntax

__property int ConnInfoSymmetricKeyBits = { read=FConnInfoSymmetricKeyBits };

Default Value

0

Remarks

The key length of the symmetric algorithm used.

This property is read-only and not available at design time.

Data Type

Integer

ConnInfoTotalBytesReceived Property (SMTPClient Component)

The total number of bytes received over this connection.

Syntax

__property __int64 ConnInfoTotalBytesReceived = { read=FConnInfoTotalBytesReceived };

Default Value

0

Remarks

The total number of bytes received over this connection.

This property is read-only and not available at design time.

Data Type

Long64

ConnInfoTotalBytesSent Property (SMTPClient Component)

The total number of bytes sent over this connection.

Syntax

__property __int64 ConnInfoTotalBytesSent = { read=FConnInfoTotalBytesSent };

Default Value

0

Remarks

The total number of bytes sent over this connection.

This property is read-only and not available at design time.

Data Type

Long64

ConnInfoValidationLog Property (SMTPClient Component)

Contains the server certificate's chain validation log.

Syntax

__property String ConnInfoValidationLog = { read=FConnInfoValidationLog };

Default Value

""

Remarks

Contains the server certificate's chain validation log. This information may be very useful in investigating chain validation failures.

This property is read-only and not available at design time.

Data Type

String

ConnInfoVersion Property (SMTPClient Component)

Indicates the version of SSL/TLS protocol negotiated during this connection.

Syntax

__property String ConnInfoVersion = { read=FConnInfoVersion };

Default Value

""

Remarks

Indicates the version of SSL/TLS protocol negotiated during this connection.

This property is read-only and not available at design time.

Data Type

String

Domain Property (SMTPClient Component)

The sender host's domain name for HELO/EHLO.

Syntax

__property String Domain = { read=FDomain, write=FSetDomain };

Default Value

""

Remarks

Use this property before calling the Connect method to provie the domain name of the sender's host.

Data Type

String

ExternalCryptoAsyncDocumentID Property (SMTPClient Component)

Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.

Syntax

__property String ExternalCryptoAsyncDocumentID = { read=FExternalCryptoAsyncDocumentID, write=FSetExternalCryptoAsyncDocumentID };

Default Value

""

Remarks

Specifies an optional document ID for SignAsyncBegin() and SignAsyncEnd() calls.

Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch. On the completion stage, this value helps the signing component identify the correct signature in the returned batch of responses.

If using batched requests, make sure to set this property to the same value on both the pre-signing (SignAsyncBegin) and completion (SignAsyncEnd) stages.

Data Type

String

ExternalCryptoCustomParams Property (SMTPClient Component)

Custom parameters to be passed to the signing service (uninterpreted).

Syntax

__property String ExternalCryptoCustomParams = { read=FExternalCryptoCustomParams, write=FSetExternalCryptoCustomParams };

Default Value

""

Remarks

Custom parameters to be passed to the signing service (uninterpreted).

This property is not available at design time.

Data Type

String

ExternalCryptoData Property (SMTPClient Component)

Additional data to be included in the async state and mirrored back by the requestor.

Syntax

__property String ExternalCryptoData = { read=FExternalCryptoData, write=FSetExternalCryptoData };

Default Value

""

Remarks

Additional data to be included in the async state and mirrored back by the requestor.

This property is not available at design time.

Data Type

String

ExternalCryptoExternalHashCalculation Property (SMTPClient Component)

Specifies whether the message hash is to be calculated at the external endpoint.

Syntax

__property bool ExternalCryptoExternalHashCalculation = { read=FExternalCryptoExternalHashCalculation, write=FSetExternalCryptoExternalHashCalculation };

Default Value

false

Remarks

Specifies whether the message hash is to be calculated at the external endpoint. Please note that this mode is not supported by the DCAuth component.

If set to true, the component will pass a few kilobytes of to-be-signed data from the document to the OnExternalSign event. This only applies when SignExternal() is called.

Data Type

Boolean

ExternalCryptoHashAlgorithm Property (SMTPClient Component)

Specifies the request's signature hash algorithm.

Syntax

__property String ExternalCryptoHashAlgorithm = { read=FExternalCryptoHashAlgorithm, write=FSetExternalCryptoHashAlgorithm };

Default Value

"SHA256"

Remarks

Specifies the request's signature hash algorithm.

Data Type

String

ExternalCryptoKeyID Property (SMTPClient Component)

The ID of the pre-shared key used for DC request authentication.

Syntax

__property String ExternalCryptoKeyID = { read=FExternalCryptoKeyID, write=FSetExternalCryptoKeyID };

Default Value

""

Remarks

The ID of the pre-shared key used for DC request authentication.

Asynchronous DCAuth-driven communication requires that parties authenticate each other with a secret pre-shared cryptographic key. This provides an extra protection layer for the protocol and diminishes the risk of the private key becoming abused by foreign parties. Use this property to provide the pre-shared key identifier, and use ExternalCryptoKeySecret to pass the key itself.

The same KeyID/KeySecret pair should be used on the DCAuth side for the signing requests to be accepted.

Note: The KeyID/KeySecret scheme is very similar to the AuthKey scheme used in various Cloud service providers to authenticate users.

Example: signer.ExternalCrypto.KeyID = "MainSigningKey"; signer.ExternalCrypto.KeySecret = "abcdef0123456789";

Data Type

String

ExternalCryptoKeySecret Property (SMTPClient Component)

The pre-shared key used for DC request authentication.

Syntax

__property String ExternalCryptoKeySecret = { read=FExternalCryptoKeySecret, write=FSetExternalCryptoKeySecret };

Default Value

""

Remarks

The pre-shared key used for DC request authentication. This key must be set and match the key used by the DCAuth counterpart for the scheme to work.

Read more about configuring authentication in the ExternalCryptoKeyID topic.

Data Type

String

ExternalCryptoMethod Property (SMTPClient Component)

Specifies the asynchronous signing method.

Syntax

__property TsbxSMTPClientExternalCryptoMethods ExternalCryptoMethod = { read=FExternalCryptoMethod, write=FSetExternalCryptoMethod };

enum TsbxSMTPClientExternalCryptoMethods {
  asmdPKCS1=0,
  asmdPKCS7=1
};

Default Value

asmdPKCS1

Remarks

Specifies the asynchronous signing method. This is typically defined by the DC server capabilities and setup.

Available options:

Data Type

Integer

ExternalCryptoMode Property (SMTPClient Component)

Specifies the external cryptography mode.

Syntax

__property TsbxSMTPClientExternalCryptoModes ExternalCryptoMode = { read=FExternalCryptoMode, write=FSetExternalCryptoMode };

enum TsbxSMTPClientExternalCryptoModes {
  ecmDefault=0,
  ecmDisabled=1,
  ecmGeneric=2,
  ecmDCAuth=3,
  ecmDCAuthJSON=4
};

Default Value

ecmDefault

Remarks

Specifies the external cryptography mode.

Available options:

This property is not available at design time.

Data Type

Integer

ExternalCryptoPublicKeyAlgorithm Property (SMTPClient Component)

Provide the public key algorithm here if the certificate is not available on the pre-signing stage.

Syntax

__property String ExternalCryptoPublicKeyAlgorithm = { read=FExternalCryptoPublicKeyAlgorithm, write=FSetExternalCryptoPublicKeyAlgorithm };

Default Value

""

Remarks

Provide the public key algorithm here if the certificate is not available on the pre-signing stage.

Data Type

String

FIPSMode Property (SMTPClient Component)

Reserved.

Syntax

__property bool FIPSMode = { read=FFIPSMode, write=FSetFIPSMode };

Default Value

false

Remarks

This property is reserved for future use.

Data Type

Boolean

KnownCertCount Property (SMTPClient Component)

The number of records in the KnownCert arrays.

Syntax

__property int KnownCertCount = { read=FKnownCertCount, write=FSetKnownCertCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• KnownCertBytes
• KnownCertHandle

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

This property is not available at design time.

Data Type

Integer

KnownCertBytes Property (SMTPClient Component)

Returns the raw certificate data in DER format.

Syntax

__property DynamicArray KnownCertBytes[int KnownCertIndex] = { read=FKnownCertBytes };

Remarks

Returns the raw certificate data in DER format.

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

KnownCertHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 KnownCertHandle[int KnownCertIndex] = { read=FKnownCertHandle, write=FSetKnownCertHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The KnownCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCertCount property.

This property is not available at design time.

Data Type

Long64

KnownCRLCount Property (SMTPClient Component)

The number of records in the KnownCRL arrays.

Syntax

__property int KnownCRLCount = { read=FKnownCRLCount, write=FSetKnownCRLCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• KnownCRLBytes
• KnownCRLHandle

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

This property is not available at design time.

Data Type

Integer

KnownCRLBytes Property (SMTPClient Component)

Returns the raw CRL data in DER format.

Syntax

__property DynamicArray KnownCRLBytes[int KnownCRLIndex] = { read=FKnownCRLBytes };

Remarks

Returns the raw CRL data in DER format.

The KnownCRLIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCRLCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

KnownCRLHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 KnownCRLHandle[int KnownCRLIndex] = { read=FKnownCRLHandle, write=FSetKnownCRLHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The KnownCRLIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownCRLCount property.

This property is not available at design time.

Data Type

Long64

KnownOCSPCount Property (SMTPClient Component)

The number of records in the KnownOCSP arrays.

Syntax

__property int KnownOCSPCount = { read=FKnownOCSPCount, write=FSetKnownOCSPCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• KnownOCSPBytes
• KnownOCSPHandle

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

This property is not available at design time.

Data Type

Integer

KnownOCSPBytes Property (SMTPClient Component)

A buffer containing the raw OCSP response data.

Syntax

__property DynamicArray KnownOCSPBytes[int KnownOCSPIndex] = { read=FKnownOCSPBytes };

Remarks

A buffer containing the raw OCSP response data.

The KnownOCSPIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownOCSPCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

KnownOCSPHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 KnownOCSPHandle[int KnownOCSPIndex] = { read=FKnownOCSPHandle, write=FSetKnownOCSPHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The KnownOCSPIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KnownOCSPCount property.

This property is not available at design time.

Data Type

Long64

MsgAttachmentCount Property (SMTPClient Component)

Returns the number of attachments in this message.

Syntax

__property int MsgAttachmentCount = { read=FMsgAttachmentCount };

Default Value

0

Remarks

Returns the number of attachments in this message.

This property is read-only and not available at design time.

Data Type

Integer

MsgBcc Property (SMTPClient Component)

The contents of the BCC header property.

Syntax

__property String MsgBcc = { read=FMsgBcc, write=FSetMsgBcc };

Default Value

""

Remarks

The contents of the BCC header field.

The BCC header field contains the addresses of secondary recipients of the message whose addresses are not to be revealed to other recipients of the message. Mail servers remove the BCC header when processing the message and use its value for dispatching the message only.

This property is not available at design time.

Data Type

String

MsgCc Property (SMTPClient Component)

The value of the CC header property.

Syntax

__property String MsgCc = { read=FMsgCc, write=FSetMsgCc };

Default Value

""

Remarks

The value of the CC header field.

The CC field contains the addresses of secondary recipients of the message.

This property is not available at design time.

Data Type

String

MsgComments Property (SMTPClient Component)

Contains additional information about the message body.

Syntax

__property String MsgComments = { read=FMsgComments, write=FSetMsgComments };

Default Value

""

Remarks

Contains additional information about the message body.

This property is not available at design time.

Data Type

String

MsgDate Property (SMTPClient Component)

The date and time when the message entered the mail delivery system.

Syntax

__property String MsgDate = { read=FMsgDate, write=FSetMsgDate };

Default Value

""

Remarks

The date and time when the message entered the mail delivery system.

This field contains the date and time at which the creator of the message posted the message to the mail delivery system.

The date is returned and accepted in UTC time zone.

This property is not available at design time.

Data Type

String

MsgDeliveryReceipt Property (SMTPClient Component)

Enables delivery notification.

Syntax

__property bool MsgDeliveryReceipt = { read=FMsgDeliveryReceipt, write=FSetMsgDeliveryReceipt };

Default Value

false

Remarks

Enables delivery notification.

This property is not available at design time.

Data Type

Boolean

MsgFrom Property (SMTPClient Component)

Contains the value of the From header property.

Syntax

__property String MsgFrom = { read=FMsgFrom, write=FSetMsgFrom };

Default Value

""

Remarks

Contains the value of the From header field.

This field contains the address(es) of the message author(s). If the actual sender is not the author of the message, use MsgSender to specify the sender separately.

This property is not available at design time.

Data Type

String

MsgHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 MsgHandle = { read=FMsgHandle, write=FSetMsgHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

This property is not available at design time.

Data Type

Long64

MsgHtmlText Property (SMTPClient Component)

The HTML version of the message.

Syntax

__property String MsgHtmlText = { read=FMsgHtmlText, write=FSetMsgHtmlText };

Default Value

""

Remarks

The HTML version of the message.

This property is not available at design time.

Data Type

String

MsgID Property (SMTPClient Component)

The contents of the Message-ID header property.

Syntax

__property String MsgID = { read=FMsgID, write=FSetMsgID };

Default Value

""

Remarks

The contents of the Message-ID header field.

This field contains a unique identifier that refers to a particular version of this message.

This property is not available at design time.

Data Type

String

MsgInReplyTo Property (SMTPClient Component)

The value of the In-Reply-To header property.

Syntax

__property String MsgInReplyTo = { read=FMsgInReplyTo, write=FSetMsgInReplyTo };

Default Value

""

Remarks

The value of the In-Reply-To header field.

A reply message should have the "In-Reply-To:" header field which may be used to identify the message (or messages) to which the new message is a reply.

This property is not available at design time.

Data Type

String

MsgKeywords Property (SMTPClient Component)

The value of the Keywords header property.

Syntax

__property String MsgKeywords = { read=FMsgKeywords, write=FSetMsgKeywords };

Default Value

""

Remarks

The value of the Keywords header field.

This field can be used to add some important words and phrases that might be useful for the recipient.

This property is not available at design time.

Data Type

String

MsgMailer Property (SMTPClient Component)

The name of the software that was used to send the message.

Syntax

__property String MsgMailer = { read=FMsgMailer };

Default Value

""

Remarks

The name of the software that was used to send the message.

This property is read-only and not available at design time.

Data Type

String

MsgPlainText Property (SMTPClient Component)

The plain text version of the message.

Syntax

__property String MsgPlainText = { read=FMsgPlainText, write=FSetMsgPlainText };

Default Value

""

Remarks

The plain text version of the message.

This property is not available at design time.

Data Type

String

MsgPriority Property (SMTPClient Component)

Specifies the message priority.

Syntax

__property TsbxSMTPClientMsgPriorities MsgPriority = { read=FMsgPriority, write=FSetMsgPriority };

enum TsbxSMTPClientMsgPriorities {
  mpLowest=0,
  mpLow=1,
  mpNormal=2,
  mpHigh=3,
  mpHighest=4
};

Default Value

mpNormal

Remarks

Specifies the message priority.

Available options:

This property is not available at design time.

Data Type

Integer

MsgReadReceipt Property (SMTPClient Component)

Enables a read notification.

Syntax

__property bool MsgReadReceipt = { read=FMsgReadReceipt, write=FSetMsgReadReceipt };

Default Value

false

Remarks

Enables a read notification.

This property is not available at design time.

Data Type

Boolean

MsgReferences Property (SMTPClient Component)

The value of the References header property.

Syntax

__property String MsgReferences = { read=FMsgReferences, write=FSetMsgReferences };

Default Value

""

Remarks

The value of the References header field.

A reply message should include a "References:" header field which may be used to identify the "conversation thread". If the initial message is a reply itself, the References of the reply contain combined content of its "References:", "InReplyTo:" and "MessageID:" fields, subject to their presence in the original message.

This property is not available at design time.

Data Type

String

MsgReplyTo Property (SMTPClient Component)

The value of the Reply-To header property.

Syntax

__property String MsgReplyTo = { read=FMsgReplyTo, write=FSetMsgReplyTo };

Default Value

""

Remarks

The value of the Reply-To header field.

This field contains the addresses to which the replies to this message should be sent. This field is optional. If not specified, the replies must be sent to the addresses specified in the MsgFrom field.

This property is not available at design time.

Data Type

String

MsgReturnPath Property (SMTPClient Component)

The value of the Return-Path header property.

Syntax

__property String MsgReturnPath = { read=FMsgReturnPath, write=FSetMsgReturnPath };

Default Value

""

Remarks

The value of the Return-Path header field.

This field contains the address to which this message shall be returned in case of unsuccessful delivery.

This property is not available at design time.

Data Type

String

MsgSender Property (SMTPClient Component)

The value of the Sender header property.

Syntax

__property String MsgSender = { read=FMsgSender, write=FSetMsgSender };

Default Value

""

Remarks

The value of the Sender header field.

This field specifies the mailbox of the agent responsible for the actual transmission of this message. If the originator of the message can be indicated by a single mailbox and both the author and the transmitter are identical, the "Sender:" field is deemed excessive and should not be used.

This property is not available at design time.

Data Type

String

MsgSendTo Property (SMTPClient Component)

The value of the To header property.

Syntax

__property String MsgSendTo = { read=FMsgSendTo, write=FSetMsgSendTo };

Default Value

""

Remarks

The value of the To header field.

This field specifies the address(es) of the primary recipient(s) of the message.

This property is not available at design time.

Data Type

String

MsgSubject Property (SMTPClient Component)

Contains the subject property of this message.

Syntax

__property String MsgSubject = { read=FMsgSubject, write=FSetMsgSubject };

Default Value

""

Remarks

Contains the subject field of this message.

This property is not available at design time.

Data Type

String

Password Property (SMTPClient Component)

The authentication password.

Syntax

__property String Password = { read=FPassword, write=FSetPassword };

Default Value

""

Remarks

Use this property to provide the password for authenticating to the SMTP server.

In order to use OAuth 2.0 authentication to access the SMTP server, use the AccessToken property instead.

Data Type

String

ProxyAddress Property (SMTPClient Component)

The IP address of the proxy server.

Syntax

__property String ProxyAddress = { read=FProxyAddress, write=FSetProxyAddress };

Default Value

""

Remarks

The IP address of the proxy server.

Data Type

String

ProxyAuthentication Property (SMTPClient Component)

The authentication type used by the proxy server.

Syntax

__property TsbxSMTPClientProxyAuthentications ProxyAuthentication = { read=FProxyAuthentication, write=FSetProxyAuthentication };

enum TsbxSMTPClientProxyAuthentications {
  patNoAuthentication=0,
  patBasic=1,
  patDigest=2,
  patNTLM=3
};

Default Value

patNoAuthentication

Remarks

The authentication type used by the proxy server.

Data Type

Integer

ProxyPassword Property (SMTPClient Component)

The password to authenticate to the proxy server.

Syntax

__property String ProxyPassword = { read=FProxyPassword, write=FSetProxyPassword };

Default Value

""

Remarks

The password to authenticate to the proxy server.

Data Type

String

ProxyPort Property (SMTPClient Component)

The port on the proxy server to connect to.

Syntax

__property int ProxyPort = { read=FProxyPort, write=FSetProxyPort };

Default Value

0

Remarks

The port on the proxy server to connect to.

Data Type

Integer

ProxyProxyType Property (SMTPClient Component)

The type of the proxy server.

Syntax

__property TsbxSMTPClientProxyProxyTypes ProxyProxyType = { read=FProxyProxyType, write=FSetProxyProxyType };

enum TsbxSMTPClientProxyProxyTypes {
  cptNone=0,
  cptSocks4=1,
  cptSocks5=2,
  cptWebTunnel=3,
  cptHTTP=4
};

Default Value

cptNone

Remarks

The type of the proxy server.

Data Type

Integer

ProxyRequestHeaders Property (SMTPClient Component)

Contains HTTP request headers for WebTunnel and HTTP proxy.

Syntax

__property String ProxyRequestHeaders = { read=FProxyRequestHeaders, write=FSetProxyRequestHeaders };

Default Value

""

Remarks

Contains HTTP request headers for WebTunnel and HTTP proxy.

Data Type

String

ProxyResponseBody Property (SMTPClient Component)

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

Syntax

__property String ProxyResponseBody = { read=FProxyResponseBody, write=FSetProxyResponseBody };

Default Value

""

Remarks

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

Data Type

String

ProxyResponseHeaders Property (SMTPClient Component)

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

Syntax

__property String ProxyResponseHeaders = { read=FProxyResponseHeaders, write=FSetProxyResponseHeaders };

Default Value

""

Remarks

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

Data Type

String

ProxyUseIPv6 Property (SMTPClient Component)

Specifies whether IPv6 should be used when connecting through the proxy.

Syntax

__property bool ProxyUseIPv6 = { read=FProxyUseIPv6, write=FSetProxyUseIPv6 };

Default Value

false

Remarks

Specifies whether IPv6 should be used when connecting through the proxy.

Data Type

Boolean

ProxyUsername Property (SMTPClient Component)

Specifies the username credential for proxy authentication.

Syntax

__property String ProxyUsername = { read=FProxyUsername, write=FSetProxyUsername };

Default Value

""

Remarks

Specifies the username credential for proxy authentication.

Data Type

String

ServerInfoAvailable Property (SMTPClient Component)

Specifies whether server extensions are available.

Syntax

__property bool ServerInfoAvailable = { read=FServerInfoAvailable };

Default Value

false

Remarks

Specifies whether server extensions are available.

This property is read-only and not available at design time.

Data Type

Boolean

ServerInfoFeatures Property (SMTPClient Component)

Returns the list of capabilities supported by the server.

Syntax

__property __int64 ServerInfoFeatures = { read=FServerInfoFeatures };

Default Value

0

Remarks

Returns the list of capabilities supported by the server.

This value is bit mask of the following values:

This property is read-only and not available at design time.

Data Type

Long64

ServerInfoMaxMessageSize Property (SMTPClient Component)

Returns the maximum size of a message in bytes which the server can accept.

Syntax

__property int ServerInfoMaxMessageSize = { read=FServerInfoMaxMessageSize };

Default Value

0

Remarks

Returns the maximum size of a message in bytes which the server can accept.

This property is read-only and not available at design time.

Data Type

Integer

ServerInfoSupportedAuths Property (SMTPClient Component)

Contains a comma-separated list of the authentication methods supported by the server.

Syntax

__property String ServerInfoSupportedAuths = { read=FServerInfoSupportedAuths };

Default Value

""

Remarks

Contains a comma-separated list of the authentication methods supported by the server.

Use this value to setup the Authentications config property if needed.

This property is read-only and not available at design time.

Data Type

String

SessionLog Property (SMTPClient Component)

Contains the complete log of the last session.

Syntax

__property String SessionLog = { read=FSessionLog };

Default Value

""

Remarks

Use this property to access the session log produced by the component. The log can be very useful when investigating connection issues.

See the SessionLogDetails config property for the log details settings.

This property is read-only and not available at design time.

Data Type

String

SocketDNSMode Property (SMTPClient Component)

Selects the DNS resolver to use: the component's (secure) built-in one, or the one provided by the system.

Syntax

__property TsbxSMTPClientSocketDNSModes SocketDNSMode = { read=FSocketDNSMode, write=FSetSocketDNSMode };

enum TsbxSMTPClientSocketDNSModes {
  dmAuto=0,
  dmPlatform=1,
  dmOwn=2,
  dmOwnSecure=3
};

Default Value

dmAuto

Remarks

Selects the DNS resolver to use: the component's (secure) built-in one, or the one provided by the system.

Data Type

Integer

SocketDNSPort Property (SMTPClient Component)

Specifies the port number to be used for sending queries to the DNS server.

Syntax

__property int SocketDNSPort = { read=FSocketDNSPort, write=FSetSocketDNSPort };

Default Value

0

Remarks

Specifies the port number to be used for sending queries to the DNS server.

Data Type

Integer

SocketDNSQueryTimeout Property (SMTPClient Component)

The timeout (in milliseconds) for each DNS query.

Syntax

__property int SocketDNSQueryTimeout = { read=FSocketDNSQueryTimeout, write=FSetSocketDNSQueryTimeout };

Default Value

0

Remarks

The timeout (in milliseconds) for each DNS query. The value of 0 indicates an infinite timeout.

Data Type

Integer

SocketDNSServers Property (SMTPClient Component)

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

Syntax

__property String SocketDNSServers = { read=FSocketDNSServers, write=FSetSocketDNSServers };

Default Value

""

Remarks

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

Data Type

String

SocketDNSTotalTimeout Property (SMTPClient Component)

The timeout (in milliseconds) for the whole resolution process.

Syntax

__property int SocketDNSTotalTimeout = { read=FSocketDNSTotalTimeout, write=FSetSocketDNSTotalTimeout };

Default Value

0

Remarks

The timeout (in milliseconds) for the whole resolution process. The value of 0 indicates an infinite timeout.

Data Type

Integer

SocketIncomingSpeedLimit Property (SMTPClient Component)

The maximum number of bytes to read from the socket, per second.

Syntax

__property int SocketIncomingSpeedLimit = { read=FSocketIncomingSpeedLimit, write=FSetSocketIncomingSpeedLimit };

Default Value

0

Remarks

The maximum number of bytes to read from the socket, per second.

Data Type

Integer

SocketLocalAddress Property (SMTPClient Component)

The local network interface to bind the socket to.

Syntax

__property String SocketLocalAddress = { read=FSocketLocalAddress, write=FSetSocketLocalAddress };

Default Value

""

Remarks

The local network interface to bind the socket to.

Data Type

String

SocketLocalPort Property (SMTPClient Component)

The local port number to bind the socket to.

Syntax

__property int SocketLocalPort = { read=FSocketLocalPort, write=FSetSocketLocalPort };

Default Value

0

Remarks

The local port number to bind the socket to.

Data Type

Integer

SocketOutgoingSpeedLimit Property (SMTPClient Component)

The maximum number of bytes to write to the socket, per second.

Syntax

__property int SocketOutgoingSpeedLimit = { read=FSocketOutgoingSpeedLimit, write=FSetSocketOutgoingSpeedLimit };

Default Value

0

Remarks

The maximum number of bytes to write to the socket, per second.

Data Type

Integer

SocketTimeout Property (SMTPClient Component)

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

Syntax

__property int SocketTimeout = { read=FSocketTimeout, write=FSetSocketTimeout };

Default Value

60000

Remarks

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

If Timeout is set to 0, a socket operation will expire after the system-default timeout (2 hrs 8 min for TCP stack).

Data Type

Integer

SocketUseIPv6 Property (SMTPClient Component)

Enables or disables IP protocol version 6.

Syntax

__property bool SocketUseIPv6 = { read=FSocketUseIPv6, write=FSetSocketUseIPv6 };

Default Value

false

Remarks

Enables or disables IP protocol version 6.

Data Type

Boolean

TLSClientCertCount Property (SMTPClient Component)

The number of records in the TLSClientCert arrays.

Syntax

__property int TLSClientCertCount = { read=FTLSClientCertCount, write=FSetTLSClientCertCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• TLSClientCertBytes
• TLSClientCertHandle

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

This property is not available at design time.

Data Type

Integer

TLSClientCertBytes Property (SMTPClient Component)

Returns the raw certificate data in DER format.

Syntax

__property DynamicArray TLSClientCertBytes[int TLSClientCertIndex] = { read=FTLSClientCertBytes };

Remarks

Returns the raw certificate data in DER format.

The TLSClientCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSClientCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

TLSClientCertHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 TLSClientCertHandle[int TLSClientCertIndex] = { read=FTLSClientCertHandle, write=FSetTLSClientCertHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The TLSClientCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSClientCertCount property.

This property is not available at design time.

Data Type

Long64

TLSServerCertCount Property (SMTPClient Component)

The number of records in the TLSServerCert arrays.

Syntax

__property int TLSServerCertCount = { read=FTLSServerCertCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• TLSServerCertBytes
• TLSServerCertFingerprint
• TLSServerCertHandle
• TLSServerCertIssuer
• TLSServerCertIssuerRDN
• TLSServerCertKeyAlgorithm
• TLSServerCertKeyBits
• TLSServerCertKeyUsage
• TLSServerCertSelfSigned
• TLSServerCertSerialNumber
• TLSServerCertSigAlgorithm
• TLSServerCertSubject
• TLSServerCertSubjectRDN
• TLSServerCertValidFrom
• TLSServerCertValidTo

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

This property is read-only and not available at design time.

Data Type

Integer

TLSServerCertBytes Property (SMTPClient Component)

Returns the raw certificate data in DER format.

Syntax

__property DynamicArray TLSServerCertBytes[int TLSServerCertIndex] = { read=FTLSServerCertBytes };

Remarks

Returns the raw certificate data in DER format.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

TLSServerCertFingerprint Property (SMTPClient Component)

Contains the fingerprint (a hash imprint) of this certificate.

Syntax

__property String TLSServerCertFingerprint[int TLSServerCertIndex] = { read=FTLSServerCertFingerprint };

Default Value

""

Remarks

Contains the fingerprint (a hash imprint) of this certificate.

While there is no formal standard defining what a fingerprint is, a SHA1 hash of the certificate's DER-encoded body is typically used.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 TLSServerCertHandle[int TLSServerCertIndex] = { read=FTLSServerCertHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Long64

TLSServerCertIssuer Property (SMTPClient Component)

The common name of the certificate issuer (CA), typically a company name.

Syntax

__property String TLSServerCertIssuer[int TLSServerCertIndex] = { read=FTLSServerCertIssuer };

Default Value

""

Remarks

The common name of the certificate issuer (CA), typically a company name. This is part of a larger set of credentials available via TLSIssuerRDN.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertIssuerRDN Property (SMTPClient Component)

A list of Property=Value pairs that uniquely identify the certificate issuer.

Syntax

__property String TLSServerCertIssuerRDN[int TLSServerCertIndex] = { read=FTLSServerCertIssuerRDN };

Default Value

""

Remarks

A list of Property=Value pairs that uniquely identify the certificate issuer.

Example: /C=US/O=Nationwide CA/CN=Web Certification Authority

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertKeyAlgorithm Property (SMTPClient Component)

Specifies the public key algorithm of this certificate.

Syntax

__property String TLSServerCertKeyAlgorithm[int TLSServerCertIndex] = { read=FTLSServerCertKeyAlgorithm };

Default Value

"0"

Remarks

Specifies the public key algorithm of this certificate.

Use the TLSKeyBits, TLSCurve, and TLSPublicKeyBytes properties to get more details about the key the certificate contains.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertKeyBits Property (SMTPClient Component)

Returns the length of the public key in bits.

Syntax

__property int TLSServerCertKeyBits[int TLSServerCertIndex] = { read=FTLSServerCertKeyBits };

Default Value

0

Remarks

Returns the length of the public key in bits.

This value indicates the length of the principal cryptographic parameter of the key, such as the length of the RSA modulus or ECDSA field. The key data returned by the TLSPublicKeyBytes or TLSPrivateKeyBytes property would typically contain auxiliary values, and therefore be longer.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

TLSServerCertKeyUsage Property (SMTPClient Component)

Indicates the purposes of the key contained in the certificate, in the form of an OR'ed flag set.

Syntax

__property int TLSServerCertKeyUsage[int TLSServerCertIndex] = { read=FTLSServerCertKeyUsage };

Default Value

0

Remarks

Indicates the purposes of the key contained in the certificate, in the form of an OR'ed flag set.

This value is a bit mask of the following values:

Set this property before generating the certificate to propagate the key usage flags to the new certificate.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Integer

TLSServerCertSelfSigned Property (SMTPClient Component)

Indicates whether the certificate is self-signed (root) or signed by an external CA.

Syntax

__property bool TLSServerCertSelfSigned[int TLSServerCertIndex] = { read=FTLSServerCertSelfSigned };

Default Value

false

Remarks

Indicates whether the certificate is self-signed (root) or signed by an external CA.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Boolean

TLSServerCertSerialNumber Property (SMTPClient Component)

Returns the certificate's serial number.

Syntax

__property DynamicArray TLSServerCertSerialNumber[int TLSServerCertIndex] = { read=FTLSServerCertSerialNumber };

Remarks

Returns the certificate's serial number.

The serial number is a binary string that uniquely identifies a certificate among others issued by the same CA. According to the X.509 standard, the (issuer, serial number) pair should be globally unique to facilitate chain building.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

TLSServerCertSigAlgorithm Property (SMTPClient Component)

Indicates the algorithm that was used by the CA to sign this certificate.

Syntax

__property String TLSServerCertSigAlgorithm[int TLSServerCertIndex] = { read=FTLSServerCertSigAlgorithm };

Default Value

""

Remarks

Indicates the algorithm that was used by the CA to sign this certificate.

A signature algorithm typically combines hash and public key algorithms together, such as sha256WithRSAEncryption or ecdsa-with-SHA256.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertSubject Property (SMTPClient Component)

The common name of the certificate holder, typically an individual's name, a URL, an e-mail address, or a company name.

Syntax

__property String TLSServerCertSubject[int TLSServerCertIndex] = { read=FTLSServerCertSubject };

Default Value

""

Remarks

The common name of the certificate holder, typically an individual's name, a URL, an e-mail address, or a company name. This is part of a larger set of credentials available via TLSSubjectRDN.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertSubjectRDN Property (SMTPClient Component)

A list of Property=Value pairs that uniquely identify the certificate holder (subject).

Syntax

__property String TLSServerCertSubjectRDN[int TLSServerCertIndex] = { read=FTLSServerCertSubjectRDN };

Default Value

""

Remarks

A list of Property=Value pairs that uniquely identify the certificate holder (subject).

Depending on the purpose of the certificate and the policies of the CA that issued it, the values included in the subject record may differ drastically and contain business or personal names, web URLs, email addresses, and other data.

Example: /C=US/O=Oranges and Apples, Inc./OU=Accounts Receivable/1.2.3.4.5=Value with unknown OID/CN=Margaret Watkins.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertValidFrom Property (SMTPClient Component)

The time point at which the certificate becomes valid, in UTC.

Syntax

__property String TLSServerCertValidFrom[int TLSServerCertIndex] = { read=FTLSServerCertValidFrom };

Default Value

""

Remarks

The time point at which the certificate becomes valid, in UTC.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSServerCertValidTo Property (SMTPClient Component)

The time point at which the certificate expires, in UTC.

Syntax

__property String TLSServerCertValidTo[int TLSServerCertIndex] = { read=FTLSServerCertValidTo };

Default Value

""

Remarks

The time point at which the certificate expires, in UTC.

The TLSServerCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TLSServerCertCount property.

This property is read-only and not available at design time.

Data Type

String

TLSAutoValidateCertificates Property (SMTPClient Component)

Specifies whether server-side TLS certificates should be validated automatically using internal validation rules.

Syntax

__property bool TLSAutoValidateCertificates = { read=FTLSAutoValidateCertificates, write=FSetTLSAutoValidateCertificates };

Default Value

true

Remarks

Specifies whether server-side TLS certificates should be validated automatically using internal validation rules.

Data Type

Boolean

TLSBaseConfiguration Property (SMTPClient Component)

Selects the base configuration for the TLS settings.

Syntax

__property TsbxSMTPClientTLSBaseConfigurations TLSBaseConfiguration = { read=FTLSBaseConfiguration, write=FSetTLSBaseConfiguration };

enum TsbxSMTPClientTLSBaseConfigurations {
  stpcDefault=0,
  stpcCompatible=1,
  stpcComprehensiveInsecure=2,
  stpcHighlySecure=3
};

Default Value

stpcDefault

Remarks

Selects the base configuration for the TLS settings. Several profiles are offered and tuned up for different purposes, such as high security or higher compatibility.

Data Type

Integer

TLSCiphersuites Property (SMTPClient Component)

A list of ciphersuites separated with commas or semicolons.

Syntax

__property String TLSCiphersuites = { read=FTLSCiphersuites, write=FSetTLSCiphersuites };

Default Value

""

Remarks

A list of ciphersuites separated with commas or semicolons. Each ciphersuite in the list may be prefixed with a minus sign (-) to indicate that the ciphersuite should be disabled rather than enabled. Besides the specific ciphersuite modifiers, this property supports the all (and -all) aliases, allowing all ciphersuites to be blanketly enabled or disabled at once.

Note: the list of ciphersuites provided to this property alters the baseline list of ciphersuites as defined by TLSBaseConfiguration. Remember to start your ciphersuite string with -all; if you need to only enable a specific fixed set of ciphersuites. The list of supported ciphersuites is provided below:

• NULL_NULL_NULL
• RSA_NULL_MD5
• RSA_NULL_SHA
• RSA_RC4_MD5
• RSA_RC4_SHA
• RSA_RC2_MD5
• RSA_IDEA_MD5
• RSA_IDEA_SHA
• RSA_DES_MD5
• RSA_DES_SHA
• RSA_3DES_MD5
• RSA_3DES_SHA
• RSA_AES128_SHA
• RSA_AES256_SHA
• DH_DSS_DES_SHA
• DH_DSS_3DES_SHA
• DH_DSS_AES128_SHA
• DH_DSS_AES256_SHA
• DH_RSA_DES_SHA
• DH_RSA_3DES_SHA
• DH_RSA_AES128_SHA
• DH_RSA_AES256_SHA
• DHE_DSS_DES_SHA
• DHE_DSS_3DES_SHA
• DHE_DSS_AES128_SHA
• DHE_DSS_AES256_SHA
• DHE_RSA_DES_SHA
• DHE_RSA_3DES_SHA
• DHE_RSA_AES128_SHA
• DHE_RSA_AES256_SHA
• DH_ANON_RC4_MD5
• DH_ANON_DES_SHA
• DH_ANON_3DES_SHA
• DH_ANON_AES128_SHA
• DH_ANON_AES256_SHA
• RSA_RC2_MD5_EXPORT
• RSA_RC4_MD5_EXPORT
• RSA_DES_SHA_EXPORT
• DH_DSS_DES_SHA_EXPORT
• DH_RSA_DES_SHA_EXPORT
• DHE_DSS_DES_SHA_EXPORT
• DHE_RSA_DES_SHA_EXPORT
• DH_ANON_RC4_MD5_EXPORT
• DH_ANON_DES_SHA_EXPORT
• RSA_CAMELLIA128_SHA
• DH_DSS_CAMELLIA128_SHA
• DH_RSA_CAMELLIA128_SHA
• DHE_DSS_CAMELLIA128_SHA
• DHE_RSA_CAMELLIA128_SHA
• DH_ANON_CAMELLIA128_SHA
• RSA_CAMELLIA256_SHA
• DH_DSS_CAMELLIA256_SHA
• DH_RSA_CAMELLIA256_SHA
• DHE_DSS_CAMELLIA256_SHA
• DHE_RSA_CAMELLIA256_SHA
• DH_ANON_CAMELLIA256_SHA
• PSK_RC4_SHA
• PSK_3DES_SHA
• PSK_AES128_SHA
• PSK_AES256_SHA
• DHE_PSK_RC4_SHA
• DHE_PSK_3DES_SHA
• DHE_PSK_AES128_SHA
• DHE_PSK_AES256_SHA
• RSA_PSK_RC4_SHA
• RSA_PSK_3DES_SHA
• RSA_PSK_AES128_SHA
• RSA_PSK_AES256_SHA
• RSA_SEED_SHA
• DH_DSS_SEED_SHA
• DH_RSA_SEED_SHA
• DHE_DSS_SEED_SHA
• DHE_RSA_SEED_SHA
• DH_ANON_SEED_SHA
• SRP_SHA_3DES_SHA
• SRP_SHA_RSA_3DES_SHA
• SRP_SHA_DSS_3DES_SHA
• SRP_SHA_AES128_SHA
• SRP_SHA_RSA_AES128_SHA
• SRP_SHA_DSS_AES128_SHA
• SRP_SHA_AES256_SHA
• SRP_SHA_RSA_AES256_SHA
• SRP_SHA_DSS_AES256_SHA
• ECDH_ECDSA_NULL_SHA
• ECDH_ECDSA_RC4_SHA
• ECDH_ECDSA_3DES_SHA
• ECDH_ECDSA_AES128_SHA
• ECDH_ECDSA_AES256_SHA
• ECDHE_ECDSA_NULL_SHA
• ECDHE_ECDSA_RC4_SHA
• ECDHE_ECDSA_3DES_SHA
• ECDHE_ECDSA_AES128_SHA
• ECDHE_ECDSA_AES256_SHA
• ECDH_RSA_NULL_SHA
• ECDH_RSA_RC4_SHA
• ECDH_RSA_3DES_SHA
• ECDH_RSA_AES128_SHA
• ECDH_RSA_AES256_SHA
• ECDHE_RSA_NULL_SHA
• ECDHE_RSA_RC4_SHA
• ECDHE_RSA_3DES_SHA
• ECDHE_RSA_AES128_SHA
• ECDHE_RSA_AES256_SHA
• ECDH_ANON_NULL_SHA
• ECDH_ANON_RC4_SHA
• ECDH_ANON_3DES_SHA
• ECDH_ANON_AES128_SHA
• ECDH_ANON_AES256_SHA
• RSA_NULL_SHA256
• RSA_AES128_SHA256
• RSA_AES256_SHA256
• DH_DSS_AES128_SHA256
• DH_RSA_AES128_SHA256
• DHE_DSS_AES128_SHA256
• DHE_RSA_AES128_SHA256
• DH_DSS_AES256_SHA256
• DH_RSA_AES256_SHA256
• DHE_DSS_AES256_SHA256
• DHE_RSA_AES256_SHA256
• DH_ANON_AES128_SHA256
• DH_ANON_AES256_SHA256
• RSA_AES128_GCM_SHA256
• RSA_AES256_GCM_SHA384
• DHE_RSA_AES128_GCM_SHA256
• DHE_RSA_AES256_GCM_SHA384
• DH_RSA_AES128_GCM_SHA256
• DH_RSA_AES256_GCM_SHA384
• DHE_DSS_AES128_GCM_SHA256
• DHE_DSS_AES256_GCM_SHA384
• DH_DSS_AES128_GCM_SHA256
• DH_DSS_AES256_GCM_SHA384
• DH_ANON_AES128_GCM_SHA256
• DH_ANON_AES256_GCM_SHA384
• ECDHE_ECDSA_AES128_SHA256
• ECDHE_ECDSA_AES256_SHA384
• ECDH_ECDSA_AES128_SHA256
• ECDH_ECDSA_AES256_SHA384
• ECDHE_RSA_AES128_SHA256
• ECDHE_RSA_AES256_SHA384
• ECDH_RSA_AES128_SHA256
• ECDH_RSA_AES256_SHA384
• ECDHE_ECDSA_AES128_GCM_SHA256
• ECDHE_ECDSA_AES256_GCM_SHA384
• ECDH_ECDSA_AES128_GCM_SHA256
• ECDH_ECDSA_AES256_GCM_SHA384
• ECDHE_RSA_AES128_GCM_SHA256
• ECDHE_RSA_AES256_GCM_SHA384
• ECDH_RSA_AES128_GCM_SHA256
• ECDH_RSA_AES256_GCM_SHA384
• PSK_AES128_GCM_SHA256
• PSK_AES256_GCM_SHA384
• DHE_PSK_AES128_GCM_SHA256
• DHE_PSK_AES256_GCM_SHA384
• RSA_PSK_AES128_GCM_SHA256
• RSA_PSK_AES256_GCM_SHA384
• PSK_AES128_SHA256
• PSK_AES256_SHA384
• PSK_NULL_SHA256
• PSK_NULL_SHA384
• DHE_PSK_AES128_SHA256
• DHE_PSK_AES256_SHA384
• DHE_PSK_NULL_SHA256
• DHE_PSK_NULL_SHA384
• RSA_PSK_AES128_SHA256
• RSA_PSK_AES256_SHA384
• RSA_PSK_NULL_SHA256
• RSA_PSK_NULL_SHA384
• RSA_CAMELLIA128_SHA256
• DH_DSS_CAMELLIA128_SHA256
• DH_RSA_CAMELLIA128_SHA256
• DHE_DSS_CAMELLIA128_SHA256
• DHE_RSA_CAMELLIA128_SHA256
• DH_ANON_CAMELLIA128_SHA256
• RSA_CAMELLIA256_SHA256
• DH_DSS_CAMELLIA256_SHA256
• DH_RSA_CAMELLIA256_SHA256
• DHE_DSS_CAMELLIA256_SHA256
• DHE_RSA_CAMELLIA256_SHA256
• DH_ANON_CAMELLIA256_SHA256
• ECDHE_ECDSA_CAMELLIA128_SHA256
• ECDHE_ECDSA_CAMELLIA256_SHA384
• ECDH_ECDSA_CAMELLIA128_SHA256
• ECDH_ECDSA_CAMELLIA256_SHA384
• ECDHE_RSA_CAMELLIA128_SHA256
• ECDHE_RSA_CAMELLIA256_SHA384
• ECDH_RSA_CAMELLIA128_SHA256
• ECDH_RSA_CAMELLIA256_SHA384
• RSA_CAMELLIA128_GCM_SHA256
• RSA_CAMELLIA256_GCM_SHA384
• DHE_RSA_CAMELLIA128_GCM_SHA256
• DHE_RSA_CAMELLIA256_GCM_SHA384
• DH_RSA_CAMELLIA128_GCM_SHA256
• DH_RSA_CAMELLIA256_GCM_SHA384
• DHE_DSS_CAMELLIA128_GCM_SHA256
• DHE_DSS_CAMELLIA256_GCM_SHA384
• DH_DSS_CAMELLIA128_GCM_SHA256
• DH_DSS_CAMELLIA256_GCM_SHA384
• DH_anon_CAMELLIA128_GCM_SHA256
• DH_anon_CAMELLIA256_GCM_SHA384
• ECDHE_ECDSA_CAMELLIA128_GCM_SHA256
• ECDHE_ECDSA_CAMELLIA256_GCM_SHA384
• ECDH_ECDSA_CAMELLIA128_GCM_SHA256
• ECDH_ECDSA_CAMELLIA256_GCM_SHA384
• ECDHE_RSA_CAMELLIA128_GCM_SHA256
• ECDHE_RSA_CAMELLIA256_GCM_SHA384
• ECDH_RSA_CAMELLIA128_GCM_SHA256
• ECDH_RSA_CAMELLIA256_GCM_SHA384
• PSK_CAMELLIA128_GCM_SHA256
• PSK_CAMELLIA256_GCM_SHA384
• DHE_PSK_CAMELLIA128_GCM_SHA256
• DHE_PSK_CAMELLIA256_GCM_SHA384
• RSA_PSK_CAMELLIA128_GCM_SHA256
• RSA_PSK_CAMELLIA256_GCM_SHA384
• PSK_CAMELLIA128_SHA256
• PSK_CAMELLIA256_SHA384
• DHE_PSK_CAMELLIA128_SHA256
• DHE_PSK_CAMELLIA256_SHA384
• RSA_PSK_CAMELLIA128_SHA256
• RSA_PSK_CAMELLIA256_SHA384
• ECDHE_PSK_CAMELLIA128_SHA256
• ECDHE_PSK_CAMELLIA256_SHA384
• ECDHE_PSK_RC4_SHA
• ECDHE_PSK_3DES_SHA
• ECDHE_PSK_AES128_SHA
• ECDHE_PSK_AES256_SHA
• ECDHE_PSK_AES128_SHA256
• ECDHE_PSK_AES256_SHA384
• ECDHE_PSK_NULL_SHA
• ECDHE_PSK_NULL_SHA256
• ECDHE_PSK_NULL_SHA384
• ECDHE_RSA_CHACHA20_POLY1305_SHA256
• ECDHE_ECDSA_CHACHA20_POLY1305_SHA256
• DHE_RSA_CHACHA20_POLY1305_SHA256
• PSK_CHACHA20_POLY1305_SHA256
• ECDHE_PSK_CHACHA20_POLY1305_SHA256
• DHE_PSK_CHACHA20_POLY1305_SHA256
• RSA_PSK_CHACHA20_POLY1305_SHA256
• AES128_GCM_SHA256
• AES256_GCM_SHA384
• CHACHA20_POLY1305_SHA256
• AES128_CCM_SHA256
• AES128_CCM8_SHA256

Data Type

String

TLSClientAuth Property (SMTPClient Component)

Enables or disables certificate-based client authentication.

Syntax

__property TsbxSMTPClientTLSClientAuths TLSClientAuth = { read=FTLSClientAuth, write=FSetTLSClientAuth };

enum TsbxSMTPClientTLSClientAuths {
  ccatNoAuth=0,
  ccatRequestCert=1,
  ccatRequireCert=2
};

Default Value

ccatNoAuth

Remarks

Enables or disables certificate-based client authentication.

Set this property to true to tune up the client authentication type:

Data Type

Integer

TLSECCurves Property (SMTPClient Component)

Defines the elliptic curves to enable.

Syntax

__property String TLSECCurves = { read=FTLSECCurves, write=FSetTLSECCurves };

Default Value

""

Remarks

Defines the elliptic curves to enable.

Data Type

String

TLSExtensions Property (SMTPClient Component)

Provides access to TLS extensions.

Syntax

__property String TLSExtensions = { read=FTLSExtensions, write=FSetTLSExtensions };

Default Value

""

Remarks

Provides access to TLS extensions.

Data Type

String

TLSForceResumeIfDestinationChanges Property (SMTPClient Component)

Whether to force TLS session resumption when the destination address changes.

Syntax

__property bool TLSForceResumeIfDestinationChanges = { read=FTLSForceResumeIfDestinationChanges, write=FSetTLSForceResumeIfDestinationChanges };

Default Value

false

Remarks

Whether to force TLS session resumption when the destination address changes.

Data Type

Boolean

TLSPreSharedIdentity Property (SMTPClient Component)

Defines the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

Syntax

__property String TLSPreSharedIdentity = { read=FTLSPreSharedIdentity, write=FSetTLSPreSharedIdentity };

Default Value

""

Remarks

Defines the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

This property is not available at design time.

Data Type

String

TLSPreSharedKey Property (SMTPClient Component)

Contains the pre-shared key for the PSK (Pre-Shared Key) key-exchange mechanism, encoded with base16.

Syntax

__property String TLSPreSharedKey = { read=FTLSPreSharedKey, write=FSetTLSPreSharedKey };

Default Value

""

Remarks

Contains the pre-shared key for the PSK (Pre-Shared Key) key-exchange mechanism, encoded with base16.

This property is not available at design time.

Data Type

String

TLSPreSharedKeyCiphersuite Property (SMTPClient Component)

Defines the ciphersuite used for PSK (Pre-Shared Key) negotiation.

Syntax

__property String TLSPreSharedKeyCiphersuite = { read=FTLSPreSharedKeyCiphersuite, write=FSetTLSPreSharedKeyCiphersuite };

Default Value

""

Remarks

Defines the ciphersuite used for PSK (Pre-Shared Key) negotiation.

Data Type

String

TLSRenegotiationAttackPreventionMode Property (SMTPClient Component)

Selects the renegotiation attack prevention mechanism.

Syntax

__property TsbxSMTPClientTLSRenegotiationAttackPreventionModes TLSRenegotiationAttackPreventionMode = { read=FTLSRenegotiationAttackPreventionMode, write=FSetTLSRenegotiationAttackPreventionMode };

enum TsbxSMTPClientTLSRenegotiationAttackPreventionModes {
  crapmCompatible=0,
  crapmStrict=1,
  crapmAuto=2
};

Default Value

crapmAuto

Remarks

Selects the renegotiation attack prevention mechanism.

The following options are available:

Data Type

Integer

TLSRevocationCheck Property (SMTPClient Component)

Specifies the kind(s) of revocation check to perform.

Syntax

__property TsbxSMTPClientTLSRevocationChecks TLSRevocationCheck = { read=FTLSRevocationCheck, write=FSetTLSRevocationCheck };

enum TsbxSMTPClientTLSRevocationChecks {
  crcNone=0,
  crcAuto=1,
  crcAllCRL=2,
  crcAllOCSP=3,
  crcAllCRLAndOCSP=4,
  crcAnyCRL=5,
  crcAnyOCSP=6,
  crcAnyCRLOrOCSP=7,
  crcAnyOCSPOrCRL=8
};

Default Value

crcAuto

Remarks

Specifies the kind(s) of revocation check to perform.

Revocation checking is necessary to ensure the integrity of the chain and obtain up-to-date certificate validity and trustworthiness information.

This setting controls the way the revocation checks are performed for every certificate in the chain. Typically certificates come with two types of revocation information sources: CRL (certificate revocation lists) and OCSP responders. CRLs are static objects periodically published by the CA at some online location. OCSP responders are active online services maintained by the CA that can provide up-to-date information on certificate statuses in near real time.

There are some conceptual differences between the two. CRLs are normally larger in size. Their use involves some latency because there is normally some delay between the time when a certificate was revoked and the time the subsequent CRL mentioning that is published. The benefits of CRL is that the same object can provide statuses for all certificates issued by a particular CA, and that the whole technology is much simpler than OCSP (and thus is supported by more CAs).

This setting lets you adjust the validation course by including or excluding certain types of revocation sources from the validation process. The crcAnyOCSPOrCRL setting (give preference to the faster OCSP route and only demand one source to succeed) is a good choice for most typical validation environments. The "crcAll*" modes are much stricter, and may be used in scenarios where bulletproof validity information is essential.

Note: If no CRL or OCSP endpoints are provided by the CA, the revocation check will be considered successful. This is because the CA chose not to supply revocation information for its certificates, meaning they are considered irrevocable.

Note: Within each of the above settings, if any retrieved CRL or OCSP response indicates that the certificate has been revoked, the revocation check fails.

This property is not available at design time.

Data Type

Integer

TLSSSLOptions Property (SMTPClient Component)

Various SSL (TLS) protocol options, set of cssloExpectShutdownMessage 0x001 Wait for the close-notify message when shutting down the connection cssloOpenSSLDTLSWorkaround 0x002 (DEPRECATED) Use a DTLS version workaround when talking to very old OpenSSL versions cssloDisableKexLengthAlignment 0x004 Do not align the client-side PMS by the RSA modulus size.

Syntax

__property int TLSSSLOptions = { read=FTLSSSLOptions, write=FSetTLSSSLOptions };

Default Value

16

Remarks

Various SSL (TLS) protocol options, set of

Data Type

Integer

TLSTLSMode Property (SMTPClient Component)

Specifies the TLS mode to use.

Syntax

__property TsbxSMTPClientTLSTLSModes TLSTLSMode = { read=FTLSTLSMode, write=FSetTLSTLSMode };

enum TsbxSMTPClientTLSTLSModes {
  smDefault=0,
  smNoTLS=1,
  smExplicitTLS=2,
  smImplicitTLS=3,
  smMixedTLS=4
};

Default Value

smDefault

Remarks

Specifies the TLS mode to use.

Data Type

Integer

TLSUseExtendedMasterSecret Property (SMTPClient Component)

Enables the Extended Master Secret Extension, as defined in RFC 7627.

Syntax

__property bool TLSUseExtendedMasterSecret = { read=FTLSUseExtendedMasterSecret, write=FSetTLSUseExtendedMasterSecret };

Default Value

false

Remarks

Enables the Extended Master Secret Extension, as defined in RFC 7627.

Data Type

Boolean

TLSUseSessionResumption Property (SMTPClient Component)

Enables or disables the TLS session resumption capability.

Syntax

__property bool TLSUseSessionResumption = { read=FTLSUseSessionResumption, write=FSetTLSUseSessionResumption };

Default Value

false

Remarks

Enables or disables the TLS session resumption capability.

Data Type

Boolean

TLSVersions Property (SMTPClient Component)

The SSL/TLS versions to enable by default.

Syntax

__property int TLSVersions = { read=FTLSVersions, write=FSetTLSVersions };

Default Value

16

Remarks

The SSL/TLS versions to enable by default.

Data Type

Integer

TrustedCertCount Property (SMTPClient Component)

The number of records in the TrustedCert arrays.

Syntax

__property int TrustedCertCount = { read=FTrustedCertCount, write=FSetTrustedCertCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• TrustedCertBytes
• TrustedCertHandle

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

This property is not available at design time.

Data Type

Integer

TrustedCertBytes Property (SMTPClient Component)

Returns the raw certificate data in DER format.

Syntax

__property DynamicArray TrustedCertBytes[int TrustedCertIndex] = { read=FTrustedCertBytes };

Remarks

Returns the raw certificate data in DER format.

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is read-only and not available at design time.

Data Type

Byte Array

TrustedCertHandle Property (SMTPClient Component)

Allows to get or set a 'handle', a unique identifier of the underlying property object.

Syntax

__property __int64 TrustedCertHandle[int TrustedCertIndex] = { read=FTrustedCertHandle, write=FSetTrustedCertHandle };

Default Value

0

Remarks

Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.

When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object after such operation. pdfSigner.setSigningCertHandle(certMgr.getCertHandle());

The TrustedCertIndex parameter specifies the index of the item in the array. The size of the array is controlled by the TrustedCertCount property.

This property is not available at design time.

Data Type

Long64

Username Property (SMTPClient Component)

The authentication username.

Syntax

__property String Username = { read=FUsername, write=FSetUsername };

Default Value

""

Remarks

Use this property to provide the username for authenticating to the SMTP server.

Data Type

String

Config Method (SMTPClient Component)

Sets or retrieves a configuration setting.

Syntax

String __fastcall Config(String ConfigurationString);

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, 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 (SMTPClient Component)

Establishes a connection to the SMTP server.

Syntax

void __fastcall Connect(String Address, int Port);

Remarks

Use this method to establish a connection to the SMTP server at Address and Port.

Disconnect Method (SMTPClient Component)

Closes connection to the SMTP server.

Syntax

void __fastcall Disconnect();

Remarks

Call this method when all messages have been sent.

DoAction Method (SMTPClient Component)

Performs an additional action.

Syntax

String __fastcall DoAction(String ActionID, String ActionParams);

Remarks

DoAction is a generic method available in every component. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.

The unique identifier (case insensitive) of the action is provided in the ActionID parameter.

ActionParams contains the value of a single parameter, or a list of multiple parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....

Reset Method (SMTPClient Component)

Resets the component settings.

Syntax

void __fastcall Reset();

Remarks

Reset is a generic method available in every component.

SendBytes Method (SMTPClient Component)

Sends an e-mail message stored in a byte array.

Syntax

void __fastcall SendBytes(DynamicArray<Byte> Bytes);

Remarks

Use this method to send a message stored in a byte array specified by Bytes.

SendFile Method (SMTPClient Component)

Sends an e-mail message stored in a file.

Syntax

void __fastcall SendFile(String FileName);

Remarks

Use this method to send a message stored in the file specified by FileName.

SendMsg Method (SMTPClient Component)

Sends a message to the SMTP server.

Syntax

void __fastcall SendMsg();

Remarks

AuthFailed Event (SMTPClient Component)

Fires when an authentication attempt has failed.

Syntax

typedef struct {
  String Auth;
  int ErrorCode;
  String ErrorMessage;
  String ServerReply;
  bool TryAgain;
} TsbxSMTPClientAuthFailedEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientAuthFailedEvent)(System::TObject* Sender, TsbxSMTPClientAuthFailedEventParams *e);
__property TsbxSMTPClientAuthFailedEvent OnAuthFailed = { read=FOnAuthFailed, write=FOnAuthFailed };

Remarks

The component fires this event when an authentication attempt has failed for some reason.

Auth reports the authentication method that has failed. You can adjust the Authentications config property to try another method.

ErrorCode contains an error code, and ErrorMessage contains an error message.

ServerReply provides the error info reported by the server. This info depends on the transport protocol and on the authentication method.

Set the TryAgain parameter to true if the component should try to authenticate again. If the parameter remains false, the authentication will fail with an exception.

AuthStart Event (SMTPClient Component)

Fires when the authentication is about to be started.

Syntax

typedef struct {
  String UsableAuths;
} TsbxSMTPClientAuthStartEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientAuthStartEvent)(System::TObject* Sender, TsbxSMTPClientAuthStartEventParams *e);
__property TsbxSMTPClientAuthStartEvent OnAuthStart = { read=FOnAuthStart, write=FOnAuthStart };

Remarks

The component fires this event when it has established the TCP connection and is ready to proceed to the user authentication step.

The UsableAuths parameter contains a comma-separated list of the authentication methods supported by both, the client and the server.

In this event handler it's possible to update the method list in the Authentications config property according to the provided list of usable methods. The full list of the authentication methods supported by the server is available in ServerInfo.SupportedAuths.

AuthSucceeded Event (SMTPClient Component)

Fires when the authentication has succeeded.

Syntax

typedef struct {
  String Auth;
} TsbxSMTPClientAuthSucceededEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientAuthSucceededEvent)(System::TObject* Sender, TsbxSMTPClientAuthSucceededEventParams *e);
__property TsbxSMTPClientAuthSucceededEvent OnAuthSucceeded = { read=FOnAuthSucceeded, write=FOnAuthSucceeded };

Remarks

The component fires this event when it has succeeded to authenticate to the server. Auth reports the authentication method that has succeeded.

Command Event (SMTPClient Component)

Reports a command sent to the server.

Syntax

typedef struct {
  String Cmd;
} TsbxSMTPClientCommandEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientCommandEvent)(System::TObject* Sender, TsbxSMTPClientCommandEventParams *e);
__property TsbxSMTPClientCommandEvent OnCommand = { read=FOnCommand, write=FOnCommand };

Remarks

The component fires this event whenever it sends an SMTP command to the server. Use CommandReply to track the server's responses.

CommandData Event (SMTPClient Component)

Returns the data that accompanies the command.

Syntax

typedef struct {
  String Cmd;
  String Data;
} TsbxSMTPClientCommandDataEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientCommandDataEvent)(System::TObject* Sender, TsbxSMTPClientCommandDataEventParams *e);
__property TsbxSMTPClientCommandDataEvent OnCommandData = { read=FOnCommandData, write=FOnCommandData };

Remarks

Subscribe to this event to access data accompanying the outgoing commands.

CommandReply Event (SMTPClient Component)

Reports the receipt of a reply to a command.

Syntax

typedef struct {
  String Cmd;
  String Reply;
} TsbxSMTPClientCommandReplyEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientCommandReplyEvent)(System::TObject* Sender, TsbxSMTPClientCommandReplyEventParams *e);
__property TsbxSMTPClientCommandReplyEvent OnCommandReply = { read=FOnCommandReply, write=FOnCommandReply };

Remarks

Use this event to track command replies sent in by the server. Use Command to track the commands sent out by the client.

Error Event (SMTPClient Component)

Provides information about errors during SMTP operations.

Syntax

typedef struct {
  int ErrorCode;
  String Description;
} TsbxSMTPClientErrorEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientErrorEvent)(System::TObject* Sender, TsbxSMTPClientErrorEventParams *e);
__property TsbxSMTPClientErrorEvent OnError = { read=FOnError, write=FOnError };

Remarks

This event is fired in case of exceptional conditions occured during SMTP operations.

ErrorCode contains an error code and Description contains a textual description of the error.

ExternalSign Event (SMTPClient Component)

Handles remote or external signing initiated by the SignExternal method or other source.

Syntax

typedef struct {
  String OperationId;
  String HashAlgorithm;
  String Pars;
  String Data;
  String SignedData;
} TsbxSMTPClientExternalSignEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientExternalSignEvent)(System::TObject* Sender, TsbxSMTPClientExternalSignEventParams *e);
__property TsbxSMTPClientExternalSignEvent OnExternalSign = { read=FOnExternalSign, write=FOnExternalSign };

Remarks

Assign a handler to this event if you need to delegate a low-level signing operation to an external, remote, or custom signing engine. Depending on the settings, the handler will receive a hashed or unhashed value to be signed.

The event handler must pass the value of Data to the signer, obtain the signature, and pass it back to the component via the SignedData parameter.

OperationId provides a comment about the operation and its origin. It depends on the exact component being used, and may be empty. HashAlgorithm specifies the hash algorithm being used for the operation, and Pars contains algorithm-dependent parameters.

The component uses base16 (hex) encoding for the Data, SignedData, and Pars parameters. If your signing engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the signing.

A sample MD5 hash encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16

A sample event handler that uses the .NET RSACryptoServiceProvider class may look like the following: signer.OnExternalSign += (s, e) => { var cert = new X509Certificate2("cert.pfx", "", X509KeyStorageFlags.Exportable); var key = (RSACryptoServiceProvider)cert.PrivateKey; var dataToSign = e.Data.FromBase16String(); var signedData = key.SignHash(dataToSign, "2.16.840.1.101.3.4.2.1"); e.SignedData = signedData.ToBase16String(); };

Notification Event (SMTPClient Component)

This event notifies the application about an underlying control flow event.

Syntax

typedef struct {
  String EventID;
  String EventParam;
} TsbxSMTPClientNotificationEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientNotificationEvent)(System::TObject* Sender, TsbxSMTPClientNotificationEventParams *e);
__property TsbxSMTPClientNotificationEvent OnNotification = { read=FOnNotification, write=FOnNotification };

Remarks

The component fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.

The unique identifier of the event is provided in the EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.

This component can fire this event with the following EventID values:

Progress Event (SMTPClient Component)

Reports the progress of the data transfer operation.

Syntax

typedef struct {
  __int64 Total;
  __int64 Current;
  bool Cancel;
} TsbxSMTPClientProgressEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientProgressEvent)(System::TObject* Sender, TsbxSMTPClientProgressEventParams *e);
__property TsbxSMTPClientProgressEvent OnProgress = { read=FOnProgress, write=FOnProgress };

Remarks

The component fires this event repeatedly to report the progress of the data transfer operation.

TLSCertNeeded Event (SMTPClient Component)

Fires when a remote TLS party requests a client certificate.

Syntax

typedef struct {
  String Host;
  String CANames;
} TsbxSMTPClientTLSCertNeededEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSCertNeededEvent)(System::TObject* Sender, TsbxSMTPClientTLSCertNeededEventParams *e);
__property TsbxSMTPClientTLSCertNeededEvent OnTLSCertNeeded = { read=FOnTLSCertNeeded, write=FOnTLSCertNeeded };

Remarks

This event fires to notify the implementation that a remote TLS server has requested a client certificate. The Host parameter identifies the host that makes a request, and the CANames parameter (optional, according to the TLS spec) advises on the accepted issuing CAs.

Use the TLSClientChain property in response to this event to provide the requested certificate. Please make sure the client certificate includes the associated private key. Note that you may set the certificates before the connection without waiting for this event to fire.

This event is preceded by the TLSHandshake event for the given host and, if the certificate was accepted, succeeded by the TLSEstablished event.

TLSCertValidate Event (SMTPClient Component)

This event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.

Syntax

typedef struct {
  String ServerHost;
  String ServerIP;
  bool Accept;
} TsbxSMTPClientTLSCertValidateEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSCertValidateEvent)(System::TObject* Sender, TsbxSMTPClientTLSCertValidateEventParams *e);
__property TsbxSMTPClientTLSCertValidateEvent OnTLSCertValidate = { read=FOnTLSCertValidate, write=FOnTLSCertValidate };

Remarks

This event is fired during a TLS handshake. Use the TLSServerChain property to access the certificate chain. In general, components may contact a number of TLS endpoints during their work, depending on their configuration.

Accept is assigned in accordance with the outcome of the internal validation check performed by the component, and can be adjusted if needed.

TLSEstablished Event (SMTPClient Component)

Fires when a TLS handshake with Host successfully completes.

Syntax

typedef struct {
  String Host;
  String Version;
  String Ciphersuite;
  DynamicArray ConnectionId;
  bool Abort;
} TsbxSMTPClientTLSEstablishedEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSEstablishedEvent)(System::TObject* Sender, TsbxSMTPClientTLSEstablishedEventParams *e);
__property TsbxSMTPClientTLSEstablishedEvent OnTLSEstablished = { read=FOnTLSEstablished, write=FOnTLSEstablished };

Remarks

The component uses this event to notify the application about a successful completion of a TLS handshake.

The Version, Ciphersuite, and ConnectionId parameters indicate the security parameters of the new connection. Use the Abort parameter if you need to terminate the connection at this stage.

TLSHandshake Event (SMTPClient Component)

Fires when a new TLS handshake is initiated, before the handshake commences.

Syntax

typedef struct {
  String Host;
  bool Abort;
} TsbxSMTPClientTLSHandshakeEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSHandshakeEvent)(System::TObject* Sender, TsbxSMTPClientTLSHandshakeEventParams *e);
__property TsbxSMTPClientTLSHandshakeEvent OnTLSHandshake = { read=FOnTLSHandshake, write=FOnTLSHandshake };

Remarks

The component uses this event to notify the application about the start of a new TLS handshake to Host. If the handshake is successful, this event will be followed by the TLSEstablished event. If the server chooses to request a client certificate, the TLSCertNeeded event will also be fired.

TLSPSK Event (SMTPClient Component)

Notifies the application about the PSK key exchange.

Syntax

typedef struct {
  String Host;
  String Hint;
} TsbxSMTPClientTLSPSKEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSPSKEvent)(System::TObject* Sender, TsbxSMTPClientTLSPSKEventParams *e);
__property TsbxSMTPClientTLSPSKEvent OnTLSPSK = { read=FOnTLSPSK, write=FOnTLSPSK };

Remarks

The component fires this event to notify the application about the beginning of TLS-PSK key exchange with Host. The Hint parameter may be used by the server to identify the key or service to use. Use the PreSharedKey field of TLSSettings to provide the pre-shared key to the component.

TLSShutdown Event (SMTPClient Component)

Reports the graceful closure of a TLS connection.

Syntax

typedef struct {
  String Host;
} TsbxSMTPClientTLSShutdownEventParams;
typedef void __fastcall (__closure *TsbxSMTPClientTLSShutdownEvent)(System::TObject* Sender, TsbxSMTPClientTLSShutdownEventParams *e);
__property TsbxSMTPClientTLSShutdownEvent OnTLSShutdown = { read=FOnTLSShutdown, write=FOnTLSShutdown };

Remarks

This event notifies the application about the closure of an earlier established TLS connection. Note that only graceful connection closures are reported.

Config Settings (SMTPClient Component)

The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

SMTPClient Config Settings

Base Config Settings

Trappable Errors (SMTPClient Component)

SMTPClient Errors