best spam filter port(s) for postfix?

[Byung-Hee HWANG]

On Sun, 2007-09-30 at 15:20 -0500, Joe in MPLS wrote:
> I'm running 6.2-STABLE with postfix with cyrus-sasl, imap-uw & horde for 
> mail. I'd like to stop depending on clients(Thunderbird & PDAs) for  
> primary spam control (especially because our PDAs don't do any). AV 
> scanning would be a plus too.

I'd like to recommend to use SpamAssassin(mail/p5-Mail-SpamAssassin).
That's enough. FYI, here is my local.cf:
http://izb.knu.ac.kr/~bh/stuff/izb-spamassassin-local.cf.example

Byung-Hee