Hello List

In the process of tidying up my fresh install I was wondering if the
following could be achieved:
- All mail that goes through esmtp is virus-checked and rejected if one
is found
- Mail that is relayed to other hosts is then sent as-is (if virus-free)
to the next hop
- Mail for local/alias users is delivered via maildrop and spam-checked
either against the system default settings or (if so configured by the
user) against the user's preferences

The second function is rather trivial, I suppose, as it is the default
behaviour of the MTA (courier esmtpd).

I think I can realize the third function witch spamd/spamc by using a
$sysconfdir/maildrop of
"|/usr/local/bin/spamc|/usr/courier/bin/maildrop" and put the filtering
rules into $sysconfdir/maildroprc, while users may use their own
$HOME/.mailfilter additionally (or overriding maildroprc).

My questions are: Is this assumption correct? And where would I (first
function on the above list) plug in a virus checker that scans every
incoming and outgoing esmtp transaction? Would this be a case for
courierfilter?

This is covered by various documents on the net, but each and every one
uses a different approach, and all of them include one or more patches
to the software included.

I apologize if there is a basic misunderstandingon my part of the
various courier components. Any pointers gladly welcome.

thy /markus



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