Thank you, Thank you, Thank you.
I just set up a box with postfix, and have been trying to figure out how to do this.
Joshua Thomas
Network Operations Engineer
PowerOne Media, Inc.
tel: 518-687-6143
[EMAIL PROTECTED]
-----Original Message-----
From: Bojan Zdrnja [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 20, 2003 11:52 PM
To: [EMAIL PROTECTED]
Subject: RE: [Full-Disclosure] Re: Filtering sobig with postfix
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]] On Behalf Of
> martin f krafft
> Sent: Wednesday, 20 August 2003 10:43 p.m.
> To: [EMAIL PROTECTED]
> Subject: [Full-Disclosure] Re: Filtering sobig with postfix
>
>
> also sprach [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> [2003.08.20.1017 +0200]:
> > in main.cf, enable "body_checks = (filename)". In that (filename)
> > file, write a regular _expression_ matching sobig, e.g. something
> > like
> >
> > /see attached file for details/ REJECT
>
> this incurs a factor 2-4 performance drop, and it could also elicit
> false positives. you should definitely do more than just REJECT
> (i.e. write out a message: s/REJECT/554 Suspected virus/).
Yep, as the OP is using postfix, he could use the header_checks directive,
which can identify MIME headers, so he can easily stop this worm.
Just check for Content-Disposition header and block everything with .pif in
filename.
Regards,
Bojan Zdrnja
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