spam prevention tips

I would like to setup a true proper spam prevention method on my cpanel box. I have the usual default spam assassin, exim, mailman used plus chirpy's exim acl. Please can someone show me how to properly setup rbl's (even auto update if possible), Rules du Jour, etc? I've searched cpanel forums and not getting proper results or at least anything but very old threads.

Please help me, would appreciate it.

I've found these links so far:
rulesemporium.com/rules.htm#stocks

What do you think of this?
webhostgear.com/index.php?art/id:175 (pretty old article)

or this?
rvskin.com/index.php?page=public/antispam

mailscanner?
configserver.com/free/mailscanner.html
vipuls / dcc
configserver.com/techfaq/faqlist.php?catid=5&faqid=7&page=1

Please do NOT tell me to "just buy the service...". I want to LEARN with your help and I can do it for sure, just need a little help.

Which links should I follow? Which is most effective?

Thank you

 

PLEASE HELP! trying to install RDJ

./installRDJ.pl --install --sa_dir=/etc/mail/spamassassin --sa_restart=</etc/mail/spamassassin
Option sa_restart requires an argument
[CHECK] Checking Vars to avoid error
+ /etc/mail/spamassassin Exist: OK
+ /usr/bin/wget Exists: OK
+ /etc/init.d/spamassassin Exists: FAILED

[FAILURE] There was a failure before installation
+ Command "/etc/init.d/spamassassin" doesn't exists


./installRDJ.pl --install --sa_dir=/usr/bin/spamassassin --sa_restart=</usr/bin/spamassassin
Option sa_restart requires an argument
[CHECK] Checking Vars to avoid error
+ /usr/bin/spamassassin Exist: OK
+ /usr/bin/wget Exists: OK
+ /etc/init.d/spamassassin Exists: FAILED

[FAILURE] There was a failure before installation
+ Command "/etc/init.d/spamassassin" doesn't exists

 

Yes, installed via whm addon