[Mimedefang] virus scanning and notifications

alan premselaar alien at 12inch.com
Tue Nov 4 06:27:55 EST 2003

On 11/3/03 1:21 PM, "cc" <cc at belfordhk.com> wrote:

> Hi,
> I have quite a stable (knock on wood) Mimefang setup with
> some minor issues in tweaking.
> I've noticed while tweaking the settings that the
> $VirusName is different depending on where you put
> it.
> During my initial foray into MIMEDefang, I noticed
> that in filter_begin(), $VirusName = suspicious,
> whereas in filter() it is the Virus name.  Perhaps
> this is meant to be that way.
> Just for clarification, if an incoming mail is infected
> with SWEN, the badfilename filter action is done then
> the virus scanner checks it out (or does it?).  Recently
> in 2.38, I noticed that the SWEN-infected mail aren't
> being processed.  Before, when a virus is detected in
> an email, MIMEDefang 'drops' the file but posts a notification
> of the action to the user as well as adding a tidbit
> at the end telling the user what virus was detected.  I
> also had MIMEDefang add as a suffix { Virus $VirusName removed }
> added to the subject.
> Now this doesn't seem to work consistently.  Sometimes
> it gets detected, other times not.  I don't quite
> understand what's going on.   Also, is it better to
> quarantine the infected mail or to just delete it outright?
> I'm using MIMEDefang 2.38, clamAV as my scanner on a Linux 2.4.xx
> machine.
> Would anyone know what possible reasons there are for such
> discrepencies?
> Thanks.

I've noticed very recently that after a database update (using freshclam)
that CLAMD stopped working properly.  actually, it caused my filter to busy
timeout consistantly and tempfail (for 2 days over the weekend) ...

i'Ve found that using CLAMAV instead of CLAMD seems to resolve this problem,
but i'm getting some mails identified as viruses without a virus name.

everything was running super stable until midnight monday (JST)

i suspect there's something up with the clamav virus database or something

any insight would be greatly appreciated.


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