Exim, Spamassassin, Mailscanner and ClamAV

Hi, I am looking to set up exim, spamassassin, mailscanner and clamAV on my debian box. Anybody know any good tutorials (have looked at the official docs for these progs but not finding much info on using all 4 together). Also anybody got any comments about the reliability of clamAV and how

iptables and snort

Hi,Am trying to set up a firewall on a Debian linux machine using iptables. Newto linux, can anybody point me in the direction ofa good guide to configuring a firewall using iptables?I also want to get snort and acidlab going. Any help on that would beappreciated as well.I am a bit paranoid