[fetchmail]Postfix, Spamassassin, Procmail, Fetchmail

I am running a current version of WhiteBox Linux (RHEL) and am looking 
for a tutorial for Postfix, Spamassassin, Procmail, Fetchmail. Seems I 
can get Postfix, Spamassassin, & Procmail working together, but when I 
add Fetchmail, I have problems. Either the users mail will not get 
picked up, or not get routed through Spamassassin, or ??
Suggestions?
thanks in advance
Ralph


"Do what ya can...but behave yourself"