MailScanner + Postfix => very slow...

Jason Ede J.Ede at
Wed Nov 7 09:15:07 GMT 2007

Apart from upgrading the versions...

Do you reject any mails at smtp level by using blacklists such as spamhaus, spamcop etc? or have you looked at using greylisting and/or reject_unverified_recipient in order to reduce the amount of actual processing of emails?

There's no point accepting and scanning an email if its not a valid address that can be delivered.


From: mailscanner-bounces at [mailscanner-bounces at] On Behalf Of W S [whatisee1 at]
Sent: 06 November 2007 21:30
To: mailscanner at; whatisee1 at
Subject: MailScanner + Postfix => very slow...

I’m running MailScanner (vers. 4.63.8) with Postfix (vers. 2.2) on Red Hat ES 4.
The system is processing over 200,000 emails per day, BUT most of emails (about 95%) are junk / spam and if queue gets over 10,000 it’s freezes all delivery process.
Are there any parameters that I can tweak to speed-up the delivery process?


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