Windows worms and mail server config

[Roger Grosswiler]

> On Friday 30 January 2004 03:23, Pedro Fernandes Macedo wrote:
>> After those recent freaking virii around , I'm trying to find a way to
>> block them...
>> What's the best way to do this?
>> I want to avoid sending unnecessary bounces (specially because I'm the
>> postmaster for a domain that has about 1300 users and lots of virii
>> bounces dailly , which are almost driving me mad, so I want to avoid
>> unnecessary pain to other domain admins) ...
>> Should I just reject messages containing the damned extensions
>> (scr,com,pif,bat) or should I accept them , scan them using some
>> antivirus and then drop the bounces of infected messages? The second
>> option leaves the risk of someone sending a valid pif or bat file that
>> has "format c: /X /Q"  , "deltree c: /y" or something like that , but
>> leaves the valid e-mails coming... (even though I believe that normal
>> windoze users dont send this kind of attachment)...
>
>     There's no universal solution - depends on what you need. If it's a
> corporate email you can probably stop all windows executable files...
>
>>
>> Right now my server is a standard redhat 9 at work and a FC1 at home ,
>> both using sendmail... How can I do this?
>
>     Give MailScanner (and probably SpamAssasin) a try. I found MailScanner
> very configurable and working great with sendmail.
>
>> (hints for qmail and postfix are welcome also , as we're thinking about
>> switching from sendmail to qmail or postfix)
>>
>> Thanx...
>>
>> Pedro Macedo
>
>     MailScanner does work with postfix, but I don't like the way it does.
>     At the moment I'm testing sagator with postfix and amavisd. Sagator
> is a python script and is not as good as MailScanner(perl) is. The
> reason to give it a try is that it works as postfix 'content_filter' and
> does not start 2 mailservers (as MailScanner does).
>     For postfix there is avcheck-0.9pre2.tar.gz, but it looks a bit death
> from 2003-07-27... there are patches at the maillist...
>     I wan to entirely switch from sendmail to postfix, and have no much
> experience with it yet, so I ask for your help. I'm interesded in
> MailScanner alternative for postfix - links, documentation, examples...

i have postfix in use with amavis. works excellent. can on amavisd-new
also configure spam-support with spamassassin. a little bit hard for the
first configuration, but excellent. supports many archives - means unarc
and check for viruses. written in perl. Download and documentation at
http://www.amavis.org. look for amavisd-new, which is running in a
separate daemon and can be used by postfix as content-filter.

HTH
Roger
>
> --
> Regards,
>   Doncho N. Gunchev
>   GPG-Key-ID: 1024D/DA454F79
>   Key fingerprint = 684F 688B C508 C609 0371  5E0F A089 CB15 DA45 4F79
>
>
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