PFileMailer Component
Properties Methods Events Configuration Settings Errors
The PFileMailer component is used to send encrypted and/or signed plaintext-formatted emails, with any attachments, using OpenPGP.
Syntax
nsoftware.IPWorksOpenPGP.Pfilemailer
Remarks
The PFileMailer component offers an easy-to-use interface: you can send an OpenPGP signed and encrypted message using the PSMTP component by calling the Encrypt, Sign, and SignAndEncrypt methods. Additionally, it enables you to create messages bound for multiple recipients with different keys, simultaneously encrypt and compress with the most popular compression algorithms, and control other aspects such as the encrypting algorithm.
Construct the Message
To begin specify common email properties such as SendTo, Cc, BCc, Subject, and MessageText. Connection information is specified by setting MailServer and MailPort.
Sign
To sign a message add the sender's private key to Keys. For instance:
pfilemailer.Keys.Add(new Key("c:\\my_keyring_dir", "sender@nsoftware.com"));
pfilemailer.Keys[0].Passphrase = "password";
The specified private key will be used to sign the message when Sign is called.
Encrypt
To encrypt a message add the recipient's public key to RecipientKeys. For instance:
pfilemailer.RecipientKeys.Add(new Key("c:\\my_keyring_dir", "recipient@nsoftware.com"));
The specified public key will be used to encrypt the message when Encrypt is called.
Sign and Encrypt
To sign and encrypt a message in one step call SignAndEncrypt. The message will be signed with the private keys specified in Keys and encrypted with the public keys specified in RecipientKeys.
Add Attachments
To add attachments simply call AddAttachment. The ProcessAttachments setting specifies whether attachments are also encrypted and signed.
Send
Call the Send method once the necessary properties have been set for each recipient.
Property List
The following is the full list of the properties of the component with short descriptions. Click on the links for further details.
| Attachments | The paths of files to attach to the message. |
| AuthMechanism | Used when connecting to the mail server. |
| BCc | A comma separated list of addresses for blind carbon copies (optional). |
| Cc | A comma separated list of addresses for carbon copies (optional). |
| Command | Used to send additional commands directly to the server. |
| CompressionMethod | The compression algorithm used. |
| Connected | Shows whether the component is connected. |
| DeliveryNotificationTo | Email address to send to which to send a delivery notification. |
| EncryptingAlgorithm | The encryption algorithm used when encrypting. |
| Firewall | A set of properties related to firewall access. |
| From | The email address of the sender (required). |
| Idle | The current status of the component. |
| Importance | Importance of the mail message (optional). |
| Keys | A collection of keys used for cryptographic operations. |
| LastReply | The last reply from the server. |
| LocalHost | The name of the local host or user-assigned IP interface through which connections are initiated or accepted. |
| MailPort | The server port for SMTP (default 25). |
| MailServer | The name or address of a mail server (mail relay). |
| MessageDate | Date of the mail message (optional). |
| MessageId | The Message Identifier for the message. |
| MessageRecipients | The collection of recipients of the message. |
| MessageText | The full text of the message to send (without headers). |
| OtherHeaders | An RFC 822 compliant string consisting of extra headers. |
| Password | A password for logon to the MailServer . |
| Priority | Priority of the mail message (optional). |
| ReadReceiptTo | Email address to send a read receipt to. |
| RecipientKeys | The collection of keys belonging to the recipient of the message. |
| ReplyTo | A mail address to which to reply (optional). |
| SendTo | A comma separated list of addresses for destinations (required). |
| Sensitivity | Sensitivity of the mail message (optional). |
| SigningAlgorithm | The signature hash algorithm used when signing. |
| SSLAcceptServerCert | Instructs the component to unconditionally accept the server certificate that matches the supplied certificate. |
| SSLCert | The certificate to be used during SSL negotiation. |
| SSLServerCert | The server certificate for the last established connection. |
| SSLStartMode | Determines how the component starts the SSL negotiation. |
| Subject | The subject of the mail message (optional). |
| Timeout | A timeout for the component. |
| User | A user identifier to login as in the MailServer . |
Method List
The following is the full list of the methods of the component with short descriptions. Click on the links for further details.
| AddAttachment | Adds FileName as an attachment. |
| Config | Sets or retrieves a configuration setting . |
| Connect | Connects to the mail relay and sends the SMTP HELO command. |
| Disconnect | Disconnects from the SMTP server. |
| DoEvents | Processes events from the internal message queue. |
| Encrypt | Encrypts the message. |
| Interrupt | Interrupt the current method. |
| ProcessQueue | Sends the messages which have previously been queued into QueueDir . |
| Queue | Queues the message into QueueDir . |
| ResetHeaders | Resets all the message headers to empty. |
| Send | Sends the current message and MIME encoded attachment. |
| Sign | Signs the message. |
| SignAndEncrypt | Signs and encrypts the current message. |
Event List
The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.
| ConnectionStatus | Fired to indicate changes in connection state. |
| EndTransfer | Fired when the message text completes transferring. |
| Error | Information about errors during data delivery. |
| KeyPassphrase | Fired if the passphrase of current key is incorrect or empty. |
| PITrail | Traces the commands sent to the mail server, and the respective replies. |
| Progress | Fired as progress is made. |
| SSLServerAuthentication | Fired after the server presents its certificate to the client. |
| SSLStatus | Shows the progress of the secure connection. |
| StartTransfer | Fired when the message text starts transferring. |
| Status | Shows the progress of the operation. |
| Transfer | Fired while the message text gets transferred to MailServer . |
Configuration Settings
The following is a list of configuration settings for the component with short descriptions. Click on the links for further details.
| Comment | The OpenPGP message comment. |
| ClearSignature | Specifies whether or not to create a cleartext signature. |
| ProcessAttachments | Whether or not to process attachments. |
| LogLevel | Specifies the level of detail that is logged. |
| AutoSelectDSASignatureHashAlgorithm | Whether or not to select a suitable signature hash algorithm automatically. |
| CompressionLevel | The Zip or Zlib compression level. |
| SymmetricPassphrase | The password used for symmetric encryption or decryption. |
| VersionHeader | The Version header value in the ASCII armored OpenPGP message. |
| Charset | When set, the charset Content-Type attribute will be added using the specified value. |
| IncludeCert | Whether or not to include the signer's certificate with the signed message. |
| MessageTextEncoding | When set, the MessageText value will be encoded using the specified encoding. |
| AttachmentEncoding[index] | Content-Transfer-Encoding for attached file (at index). |
| AttachmentType[index] | Content-type for attached file (at index). |
| AttachmentText[index] | Add the text into the attachment at the specified index. |
| OverrideFilename | If set to true, the AttachmentName property value will be used to set the MIME part Filename attribute. |
| TempFilePath | If set, the temporary files created during message creation will be put in the path specified. |
| UseTempFile | If set, the component uses temporary files when generating messages. |
| AllowEmptyTo | If set to True, then the SendTo property is not required. |
| AuthorizationIdentity | The value to use as the authorization identity when SASL authentication is used. |
| Charset | When set, the message headers will be encoded using the specified Charset. |
| Hello | The argument for HELO (herald) command to the server (defaults to local host name). |
| KeepQueue | If set to True, queued files are not deleted after a successful send. |
| MaxHeaderLength | Maximum length for headers to avoid line folding (default 80). |
| OtherHeaders | An RFC 822 compliant string consisting of extra headers. |
| ReturnPath | Sets the Return-Path to be used for sending email. |
| SendRSET | Whether to send RSET command. |
| StopOnToErrors | Instructs the component to stop sending the message if the server does not acknowledge any of the TOs. |
| StopOnCcErrors | Instructs the component to stop sending the message if the server does not acknowledge any of the CCs. |
| StopOnBccErrors | Instructs the component to stop sending the message if the server does not acknowledge any of the BCCs. |
| ConnectionTimeout | Sets a separate timeout value for establishing a connection. |
| FirewallAutoDetect | Tells the component whether or not to automatically detect and use firewall system settings, if available. |
| FirewallHost | Name or IP address of firewall (optional). |
| FirewallPassword | Password to be used if authentication is to be used when connecting through the firewall. |
| FirewallPort | The TCP port for the FirewallHost;. |
| FirewallType | Determines the type of firewall to connect through. |
| FirewallUser | A user name if authentication is to be used connecting through a firewall. |
| KeepAliveTime | The inactivity time in milliseconds before a TCP keep-alive packet is sent. |
| KeepAliveInterval | The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received. |
| Linger | When set to True, connections are terminated gracefully. |
| LingerTime | Time in seconds to have the connection linger. |
| LocalHost | The name of the local host through which connections are initiated or accepted. |
| LocalPort | The TCP port in the local host where the component binds. |
| MaxLineLength | The maximum amount of data to accumulate when no EOL is found. |
| MaxTransferRate | The transfer rate limit in bytes per second. |
| RecordLength | The length of received data records. |
| TCPKeepAlive | Determines whether or not the keep alive socket option is enabled. |
| UseIPv6 | Whether to use IPv6. |
| TcpNoDelay | Whether or not to delay when sending packets. |
| ReuseSSLSession | Determines if the SSL session is reused. |
| SSLCipherStrength | The minimum cipher strength used for bulk encryption. |
| SSLEnabledProtocols | Used to enable/disable the supported security protocols. |
| SSLProvider | The name of the security provider to use. |
| SSLSecurityFlags | Flags that control certificate verification. |
| OpenSSLCADir | The path to a directory containing CA certificates. |
| OpenSSLCAFile | Name of the file containing the list of CA's trusted by your application. |
| OpenSSLCipherList | A string that controls the ciphers to be used by SSL. |
| OpenSSLPrngSeedData | The data to seed the pseudo random number generator (PRNG). |
| AbsoluteTimeout | Determines whether timeouts are inactivity timeouts or absolute timeouts. |
| FirewallData | Used to send extra data to the firewall. |
| InBufferSize | The size in bytes of the incoming queue of the socket. |
| OutBufferSize | The size in bytes of the outgoing queue of the socket. |
| CodePage | The system code page used for Unicode to Multibyte translations. |