Fedora Core 2 mail server and spam protection
I have fedora core 2 installed, I just did the full install when setting it up and then made some minor changes to script files and started apps like dovecot. After that I had e-mail working. But now spam is becoming a problem.
What is the easiest way to help get rid of spam? I looked aorund a little and some people mentioned spamassassin.apache.org. Which could be what I'm looking for, but I'm sort of wondering if there is something built into fedora core 2 that I could just configure and turn on. I can't afford for the email server to go down so I'd like to keep the changes as simple as possible. If I have to install something I of course will.
Perhaps there is a guide about installing spam filters on a currently running email server which I could read.
Thanks in advance for any help.