[Gllug] Filtering emails

[Bruce Richardson]

On Tue, Dec 17, 2002 at 10:43:36AM -0000, Adrian wrote:
> Apologies for the lack of clue in this message. But....
> 
> I want to sell my sys admin the idea that we can pre-filter email messages
> before they hit our Exchange server (yes, i am afraid the dark side is
> strong here) to avoid DOS type attacks by mail bombing us with spam.
> 
> He's beginning to see the light on the usefulness (mainly via low TCO) of
> the true path, so I might be on to a winner if I can say this is easy to set
> up. Is it? Is it possible at all?

It is.  We have a gateway mail box running Exim and SpamAssassin.  All
incoming mail is first diverted to a virus-scanning host, returned to
the gateway box and then run through spamd before being forwarded on.

If you are new to configuring mail systems, Postfix is easier to
configure than Exim (though far less configurable), slightly faster and
has a more secure architecture (though in practice Exim does not have an
insecure history, with only 3 advisories on Bugtraq).

-- 
Bruce

If the universe were simple enough to be understood, we would be too
simple to understand it.
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