[Mimedefang] clamav-unofficial-sigs and pyzor

Richard Laager rlaager at wiktel.com
Mon Sep 19 02:23:25 EDT 2016

On 09/19/2016 12:46 AM, Marcus Schopen wrote:
> my be a little bit off topic, but are there any experience with the
> efficiency of pyzor and clamav-unofficial-sigs

We use clamav-unofficial-sigs. If clamd triggers, it's a hard fail for
us, regardless of whether it was a virus or spam rule. We do
differentiate them for logging and SMTP rejection messages.

I can't say how much spam would have been blocked anyway by later
processing (e.g. SpamAssassin), but we have very few (but non-zero over
the years) false positives. And in our filter, whitelisting does not
bypass this test; maybe it should, but that's the current setup.


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