Filter incoming mail from

Jason Ede J.Ede at
Tue Apr 7 16:18:11 IST 2009

> -----Original Message-----
> From: mailscanner-bounces at [mailto:mailscanner-
> bounces at] On Behalf Of Chuck Rock
> Sent: 07 April 2009 15:44
> To: mailscanner at
> Subject: Re: Filter incoming mail from
> Kai Schaetzl <maillists <at>> writes:
> >
> > Chuck Rock wrote on Thu, 2 Apr 2009 21:28:05 +0000 (UTC):
> >
> > > I'm not using SpamAssassin, just MailScanner with antivirus.
> >
> > However, SA is just for that, so use it. Don't abuse other tools for
> > things they were not made for.
> >
> > Kai
> >
> I can't overload these boxes with extra scanning. MailScanner/Sendmail
> is
> maxing out CPU and memory and adding SA will make them backlog mail for
> scanning until there's no possible way to catch up.
> They scan about 100 msgs per second and get hit with 1000 messages a
> second
> sometimes. These are quad Xeon boxes with 6 Gig RAM running clamd and
> MailScanner 4.61.7. Running clamscan instead of clamd used too much CPU
> for
> them to keep up. I have two identical boxes running with round robin
> and about
> once per year, they will get hit so hard I have to take one out of
> service to
> catch up over 12 hours or so. I can't realistically add another process
> to the
> cpu unless it's going to make up for it somewhere else.
> Thanks,
> Chuck

Have you tried limited the emails that get accepted for scanning by using RBLS such as Spamhaus, Spamcop etc? or using filters such as recipient verification or greylisting to cut down the emails? It makes a massive difference if you don't accept emails for invalid addresses or use greylisting to put off some of the spambots.

> p.s. bottom posting sucks

You run the risk of starting a war with comments like that on here..


More information about the MailScanner mailing list