I can scan incoming spam by MX record on my external box before it gets
to exchange.server.
I can can outgoing email by setting the external box as smarthost in
exchange.

How do I scan internal to internal, exchange server only email?  It
never seems to leave the exchange server.

If your clients connect directly to the Exchange server there would be no reason for mail addressed to local recipients to leave the box.


--
Michael Scheidell, CTO

I imagine you only have two choices. Either install spamassassin on the Exchange server, e.g.:
http://www.christopherlewis.com/ESA/ExchangeSpamAssassin.htm
http://wiki.apache.org/spamassassin/InstallingOnWindows
or configure your clients to use your external box as their outgoing SMTP server (which may or may not be an option depending on how you connect to Exchange). I am guessing this is only an option if your clients are set up as POP3 or IMAP clients. Note that I have no direct experience with Exchange or SA on Windows. The links provided are simply the first two I found. I'm not even certain the ESA_sink scans internal mail. The main point is I only see these two possible solutions.

Gary V

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