postfix and blocking spam

[Scott J. Henson]

Lorenzo Taylor wrote:
> I used to run postfix as my mail server until about 2 years ago when I
> switched to Debian and discovered sa-exim which can block spam at the
> source by rejecting it before it ever gets sent using spamassassin.
>

I don't think that there is anything pre-packaged like
sa-exim.  But, I think what you want is before queue
filters.  See the following webpages for some explanation.
You mean also want to look into header_checks and body_checks.

http://www.postfix.org/SMTPD_PROXY_README.html
http://www.postfix.org/FILTER_README.html
http://www.postfix.org/CONTENT_INSPECTION_README.html

Also, for general spam filtering stuff on postfix.
http://www.oddquad.org/linux/anti-spam.html
http://jimsun.linxnet.com/misc/postfix-anti-UCE.txt


-- 
Scott Henson
LCSEE Systems Staff
WVU MAE Undergraduate
Ubuntu User