From owner-freebsd-security@FreeBSD.ORG  Thu Apr 29 14:56:43 2004
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Date: Thu, 29 Apr 2004 15:56:26 -0600
From: Nick Golder <nrg@timing.com>
To: Alex V Eustrop <eustrop@net.mave.ru>
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cc: freebsd-security@freebsd.org
Subject: Re: Sendmail issues; possible exploit?
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On 2004-04-29 22:57 +0400, Alex V Eustrop wrote:
>  Are you using clamav-milter? There are was such trouble with clamav-milter
> from clamav-devel before Apr 2004 on FreeBSD 4.9 (sendmail 8.12.9p2)
>  I had that problem with 1.5 minutes or more while transferring single
> message to sendmail with clamav-milter. Sendmail has no trouble without
> clamav-milter or with other one (For example - spamass-milter-0.2.0_1 port)
>  Clamav was fixed for that bug, but real problem could be (on not to be)
> inside sendmail.
> 
> P.S. I am not sure that my message will be posted to freebsd-security@,
>      but you can forward it to upcoming discussion if it's interesting.
> 

It did end up being clamd/clamav-milter.  The symptoms began when clamd
exited with a signal 6.  Thanks for the suggestions.

-Nick