Am 10.12.2010 20:01, schrieb TAN BUI:
> 
> We are running ClamAV 96.5 on Slamd64 machines with freshclam
> running every hour to update the virus database; Besides the
> official ClamAV database, we also download those from
> Sanesecurity, SecurityInfo, MalwarePatrol once a day.The
> servers run sendmail 8.14.3 with mimedefang 2.66 calling ClamAV.
> All messages are scanned and delivered if they are virus-free;
> if detected as virus-laden, the messages will be quarantined in
> a specific sub-directory on the same mail servers where we can
> retrieve to examine, if necessary.
> 
> Some users have their mail forwarded to an account on another
> system where Sophos is being used. Since October 28, we have
> been notified by the mail administrator of that system some
> messages forwarded from our mail servers are detected by
> Sophos (running on their mail server) as infected with
> Mal/Phish-A . Unfortunately, we do not have the infected
> messages since they are considered  "clean" by ClamAV on
> our mail servers and their mail server does not keep a copy
> of infected messages.
> 
> We are wondering if anyone else also experience this kind of
> problem. As ClamAV et al. name viruses differently from Sophos,
> we don`t know for sue if ClamAV is detecting Mal/Phish-A .
> 
> Thank you very much for all your help/suggestions.
> 
> Tan Bui
> Concordia University
> Montreal, Quebec
> Canada
> _______________________________________________
> Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
> http://www.clamav.net/support/ml

i would say this is expected,
different scanners different virus-spam dbs, it will ever happen sometimes
at last fowarding mail isnt a very good idea these days
for serveral reasons ( spf etc ....)
if you have good connections to the postmasters of the forward reciept
mail servers talk to them to trust your mails and dont scan them again

in real there will be always such stuff ( false -positive ), for sure it
should be rare as it could be

-- 
Best Regards

MfG Robert Schetterer

Germany/Munich/Bavaria
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Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
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