Jon L Miller:
> Now that I've finally got my Postfix system working, I would like to
> know what restrictions I can use to block Spam, Malware and do some
> content filtering. Also is there an order that these have to be applied?
Stop 70% or more of all spam with
smtpd_recipient_restrictions =
permit_mynetworks
reject_unauth_destination
reject_rbl_client zen.spamhaus.org
(be sure to sign up for their service if you handle more email than
a documented limit, see the spamhaus.org website).
Stop other zombies with greylisting, e.g., with postgrey.
If the remaing spam bothers you, look into amavisd-new and other
deep inspection systems. Use these only for mail that isn't cleaned
via other means.
Wietse
