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Subject: Is this possible with postfix?
From: Matthew Hagerty (matthewvenux.net)
Date: Fri Mar 03 2000 - 13:37:21 CST

Greetings,

Is it possible to accomplish a configuration like this with postfix:

               +--------+ +----------+ +----------+
Internet ---->| Public |---->| Internal |---->| Internal |
          <----| SMTP |<----| SMTP |<----| Client |
               +--------+ +----------+ +----------+

The Public SMTP server is MXed as the email host for my.domain. All email
from the Internet comes in through this host and is forwarded to the
internal SMTP host for delivery. All internal clients use the internal
SMTP server for incoming and outgoing email. The internal SMTP server
should forward all outgoing email to the Public SMTP server for delivery.

I thought I could do this with a transport map on the Public server
pointing to the internal SMTP server and vice versa, a transport map on the
internal SMTP server pointing to the Public SMTP server. But what I really
got was a big mail loop. I seems the transport map looks at both incoming
and outgoing email?

Any suggestions on how I could do this would be greatly appreciated.

Thank you,
Matthew Hagerty
matthewvenux.net