You are absolutely correct. I forgot to list postgrey 1.23, in the
email software chain. The primary mail server utilizes only a 58 second
grey list which traps 90+% of the incoming traffic! The rest of the bad
is processed by Anomy and SpamAssassin.
Respectfully,
Michael M. Rach
Philip Edelbrock wrote:
Michael M. Rach wrote:
[...]
I can provide more information on my implementation only! Debian Linux
release 2, I386 Kernel 2.4.31, Postfix 2.2.8, Anomy 1.76, Cyrus-imap
2.2.12, Cyrus-SASL 2.1.21, SpamAssassin 3.1.0, Perl 5.8.7.
http://mailtools.anomy.net for the curious.
A huge help for us here has been 'gray listing'. It basicly defers
(delays) delivery of the first email from a new source, and then
whitelists that server for future emails. Since (most) virii and
spambots aren't full mail server implementations with queues, they
don't bother to try to resend after the defer. It can be annoying,
though, when somebody new needs to send something urgently and we have
to wait for the deferred email to come through. (That's pretty rare,
though)
Phil
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Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
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