On 23/08/04 10:53 +0530, Sameer D. Sahasrabuddhe wrote:
> On Sun, Aug 22, 2004 at 10:35:03PM +0530, Devdas Bhagat wrote:
> 
> > The setup itself is trivial. Depending on your mail volume, you may want
> > to farm the scanner to another system altogether.
> > Another trick to reduce the load is to use Postfix 2.x which has a built
> > in MIME parser and block attachments with specific extensions (.pif,
> > .com, .exe, .vbs, etc).
> 
> What I am specifically looking for is a setup that can eliminate the
> need to blindly drop zip files. Our servers already use clam with
> qmail.

More recent versions of amavisd-new identify encrypted zip files and can
take action on that.

> > > Is there an auto-learning phase involved? What are the pro's and cons
> > > of such auto-learning scanners?
> > 
> > No autolearning phase.
> 
> The mail I received mentioned an autolearning phase, hence the
> question.
> 
> I just wanted to cover some ground based on other people's experience
> before digging. I suppose clam is a safe bet as usual. Any numbers
> about the performance? Especially missed viruses and false hits.

No missed viruses, two false hits from amavisd-new when someone sent a
.dll file (banned by policy, so it had to be pulled out of quarantine). 

Devdas Bhagat

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