freebsd-specific postfix antispam howto

[Dave]

Hello,
    Does anyone have any information on this? I've googled and have found a 
lot of information for Linux and even an OpenBSD howto, but i am looking for 
something freebsd-specific, preferably fbsd6. I'm having issues getting all 
the services, amavisd-new configured/starting up properly and would like to 
read someone's all-integrated freebsd-specific solution if any, to get an 
idea as to what i'm doing wrong?
Thanks.
Dave.