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Features | Detailed Description
Available in .NET, VCL and ActiveX editions.
Using the SMTP protocol, a relay can transfer mail to another process on the same network or to some other network. With SMTP relay, a mail message may pass through a number of intermediate relay or gateway hosts on its path from sender to recipient. The MX mechanisms of the DNS are used to identify the appropriate next-hop destination for a message being transported. A "relay" SMTP system receives mail from an SMTP client and transmits it, without modification to the message data other than adding trace information, to another SMTP server for further relaying or for delivery. See RFC 2821, RFC 2554 and RFC 974
Note: Most SMTP servers require that the sender PC must be registered in DNS. Otherwise, relaying will be denied to such SMTP servers.
Please see the Demos code (SmtpRelay) and also the indexed Help documentation provided with the Clever Internet Suite installation for more details about using this component.
The most common members of the SmtpRelay component can be seen below:
Name
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Description
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 BatchSize |
Specifies the size of the transferred batch. |
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DnsServer |
Specifies the DNS server IP for resolving mail exchange servers of the message recipients. |
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MailMessage |
Gets or sets the Mail Message object, the mail message content of which will be processed. |
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Password |
Specifies the password that allows the desired component to log on to the server. |
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StatusList |
Represents the message relaying status per each message recipient. |
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TimeOut |
Determines the time-out interval (in milliseconds) for initiating messages request. |
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UserName |
Specifies the user name that allows the component to log on to the server. |
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UseEHLO |
Makes the client to use the SMTP extensions while communicating with the server. |
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Name
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Description
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Send |
Use this method for relaying a message to the message recipients. |
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Name
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Description
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OnRelayMessage |
Occurs when the relay agent transports the mail message to the mail exchange server. |
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OnConnectMX |
Occurs when the relay agent connects to the recipient mail exchange server. |
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OnDisconnectMX |
Occurs when the relay agent disconnects from the recipient mail exchange server. |
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OnResolveMX |
Occurs when the relay agent resolves the recipient mail exchange server. |
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OnProgress |
Occurs when data downloading / uploading is processed. |
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OnReceiveResponse |
Occurs when server response is received. |
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OnSendCommand |
Occurs when the component has sent a command. |
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