On Thu, 2003-12-04 at 04:03, McKeever Chris wrote:
> I am running qmail-scanner with clamav (0.65)
> I have one machine that acts as a gateway, and then sends it to the main email 
> server.
> The gateway is the one with qmailscanner and clamav, the email servers post-MTA 
> (@mail) has a plugin for clamav which scans the file before 
> databsing it.
> 
> I have noticed since 11/4/03 that there are about 2-4 emails per day that get by the 
> gateway and picked up by the @mail-clamav scan
> any suggestions? They are typically Exploit.IFrame.Gen and 1 W32/Yaha.g.dam
> 

Are you running clamscan or clamdscan? (i.e. the daemon version). I bet
it's the latter.

Do you have the qmail-queue.log debug file that contains evidence of
such a "missed" message? If not, turn it on and don't stop logging until
you catch another such occurance. Then you can search that file looking
for the particular message that "slipped through". At that stage you may
see why it failed. I'd suspect a bug whereby clamd failed to scan the
message for some transitory reason, but still exited with a zero error
status - so Qmail-Scanner can only assume it's OK and carried on.

Let us know what you find.

Cheers

Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +64 3 9635 377 Fax: +64 3 9635 417
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1




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