How to configure postfix+spamassin+procmail
 

Aloha. We currently use Groupwise 6.5 for our email and would like to have a dedicated Linux Redhat 9 Spamassassin box for spam filtering. I was able to install Redhat 9 and change the MTA to Postfix as per the documentation that I could find. However, I really don't know what to do next. I am a Linux newbie and I could really use some help. I would like to know the most painfree way to get this Redhat server working as a spamfilter for all incoming email for my domain. If everything goes well, I would like to use this server to filter email for other domains as well. If anyone can help me, it would be greatly appreciated.