From: Aaron Bennett (abennettclarku.edu)
Date: Fri Sep 01 2006 - 12:42:21 CDT

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Wietse Venema wrote:
> What do people use:
>
>

I can't speak highly enough of Maia Mailguard. It's based on
amavisd-new but allows per-user bayes training, white and blacklists.
We're a middling-volume site (about 85K messages per day) and have two
dual-xeon mail relays running Maia and uvscan/clamd. The database
component of Maia sits on a third box. In our older environment, we had
amavisd-new + spamassassin running without per-user training or
quarantining or the other benefits of Maia and as a result, we had to be
conservative with our SA thresholds to avoid false-positives. Our
number 1 complaint was spam -- since we list all or most staff and
faculty email on our web page. Now with Maia, we are heroes. Since
mid-july when we rolled it out, we've blocked over 600,000 spams with a
false positive rate of 0.06% and a false-negative rate of 6.57%. The
power is the user-training; it's easy and simple and lets users take
effective action against spam. It really lets SpamAssassin shine.

--
Aaron Bennett
Sr. Unix Systems Administrator
Clark University ITS
abennettclarku.edu | 508.781.7315

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