From owner-freebsd-isp  Wed Nov 28 13:31:38 2001
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From: "Blake Crosby" <dev@samurai.com>
To: "Christian Kratzer" <ck@cksoft.de>,
	"Kevin Turner" <kevin@freedomhosting.com>
Cc: <freebsd-isp@freebsd.org>, <kevin@blacklight.ca>
Subject: RE: Virus filters?
Date: Wed, 28 Nov 2001 16:30:29 -0500
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You can also use a regexp to filter out messages you dont want:

In main.cf
body_checks = regexp:/etc/postfix/body_checks

in body_checks:

/^I send you this file in order to have your advice$/   REJECT
/^I hope you can help me with this file that I send$/   REJECT

(the above is a regexp I use to stop messages that were infect with nimda to
be delivered)

Blake

> -----Original Message-----
> From: owner-freebsd-isp@FreeBSD.ORG
> [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of Christian Kratzer
> Sent: November 28, 2001 4:23 PM
> To: Kevin Turner
> Cc: freebsd-isp@freebsd.org; kevin@blacklight.ca
> Subject: Re: Virus filters?
>
>
> Hi,
>
> On Wed, 28 Nov 2001, Kevin Turner wrote:
>
> > Hello,
> >
> > I have a some FreeBSD machines all running sendmail. I need a way
> > to block all these .exe, .pif files, etc. They are getting
> really bad and
> > are
> > starting to affect our customers.
> >
> > What would be the best way to prevent our users from receiving
> these emails?
>
> I use postfix+amavis+sophos antivirus for freebsd.
>
> Of course you will have to license sophos or any other virus scanner
> for the number of mailboxes you have which does cost a bit.
>
> Greetings
> Christian
>
> --
> CK Software GmbH
> Christian Kratzer,		Schwarzwaldstr. 31, 71131 Jettingen
> Email:	ck@cksoft.de
> Phone: 	+49 7452 889-135	Open Software Solutions,
> Network Security
> Fax: 	+49 7452 889-136	FreeBSD spoken here!
>
>
>
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