Jose Luis Faria put forth on 10/20/2010 11:20 AM:
Hello people,
I am using now qmail in cluster with LDAP + Interscan Messaging Security Suite from Trendmicro.
I need to develop a new solution with:
- postfix
- dovecot
- anti-spam
- anti-malware.
I am thankful any help or suggestion for anti-spam and anti-malware.
Thanks in advance!
This will kill a huge amount of bot spam without dnsbl queries or greylisting, both of which can be resource hogs and add serious latency:
http://www.hardwarefreak.com/fqrdns.pcre
Use the "everything under smtpd_recipient_restrictions" style of Postfix main.cf:
/etc/postfix/main.cf
smtpd_recipient_restrictions permit_mynetworks permit_sasl_authenticated reject_unauth_destination ... ... check_client_access pcre:/etc/postfix/fqrdns.pcre ... ...
Ask for assistance on the Postfix users list: postfix-users@postfix.org
You'll get more expert advice than you will know what to do with. ;)
-- Stan