sendmail + spamassasin + corporate exchange server

[Jim Flowers]

There are a number of ways different ways, each with advantages and 
disadvantages.  If your gateway mail server has a view of both the Internet 
and the internal network, you could use a split DNS to provide an external 
MX record pointing a domain to the gateway mail server and an internal MX 
record (that the gateway mail server sees first) that points to the 
corporate exchange server.  No loops.

Secondly, procmail is not really necessary; you could just use the standard 
sendmail features such as virtusertable or mailertable to accomplish routing 
mail from the gateway mail server to the corporate exchange server on a per-
user and/or per-domain basis.  Procmail can still be used for those 
domains/users, if nay, not being routed to the exchange server.

Using open source programs such as 
sendmail/spamcop/clamav/spamassassin/mailscanner/mailwatch/mailstats as a 
front end to MS Exchange is a wicked spam/virus killing machine, indeed.

My stats are to drop 147 spam and 16 viri and tag another 41 possible spam 
for action by the user email client out of a total of 405 messages 
processed.  No false positives.  A clean mailbox is a wonderful thing.

--
Jim Flowers<jflowers at ezo.net>

---------- Original Message -----------
From: David Richards <davidr at skyforge.net>
To: freebsd-isp at freebsd.org
Sent: Thu, 23 Oct 2003 09:29:47 +0100
Subject: sendmail + spamassasin + corporate exchange server

> hi
>     I am using sendmail + spamassassin to filter spam on a few 
> domains. I have procmail set up to forward the emails to another 
> account. What i would like to do is to be able to forward them to 
> our corporate exchange server. I have been stuck on getting the 
> filtered email to the exchange server. I normally create an endless 
> loop between our firewall and the sendmail .
> 
> Does any one know a way to solve this or a better solution?
> 
> -- 
> David Richards
> Skyforge.Net 
> http://www.skyforge.net
> 
> Cheap Dedicated servers 
> http://dedipower.com/r.php?id=7C47
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------- End of Original Message -------