SMTP: How the Gateway Communicates with the SMTP World

Last reviewed: October 20, 1997
Article ID: Q87046

3.00 MS-DOS kb3rdparty

The information in this article applies to:

Microsoft Mail Gateway to SMTP, version 3.0

The Microsoft Mail Gateway to SMTP always connects to the designated SMTP host to send out messages. The gateway receives messages from any host that can connect to the gateway.

When using TCP as the transport mechanism, a TCP connection is made by the sender to the receiver's service port 25. When the Microsoft Mail gateway has mail to send to the SMTP world, it initiates a connection to the designated SMTP host's service port 25.

Additional reference words: 3.00 pcmail
KBCategory: kb3rdparty
KBSubcategory: MailGWSMTP

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Last reviewed: October 20, 1997
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