Spam ruleset

[Mozzi]

Hi all
I would like to ban certain words and frases from entering the system here
also it helps to control certain types of spam.
I want to do this both for subject lines and frases in the body of the mail

Now I have figured out that I need a ruleset ;-) *kidding*

I think I should do it here
# Spam Blacklist:
# Make this point to a ruleset, and anything in that ruleset whose value
# is "yes" will *always* be marked as spam.
# This can also be the filename of a ruleset.
Is Definitely Spam = no

And change that to
Is Definitely Spam = /etc/MailScanner/rules/spam.words.rules (my own rules
file)

I am just not sure how to setup the ruleset.
from or to is no problem but frases?

Would spamassassin be a better option? I havn't used it yet as I am in an ISP
enviroment and it will cause to much hassle.


Tnx

Mozzi