Running all network checks through Spamassassin

In addition to Spamassassin, I’ve been running the sbl-xbl.spamhaus.org and relays.ordb.org rbls by themselves. If there were any hits on those two rbls, the mail was automatically classified as spam. Unfortunately, I think there were some false positives in the rbl hits. Now I’m assigning points to rbl hits in Spamassassin, so if a mail gets a hit from a rbl, it won’t automatically be considered spam, but it will contribute to the overall score which might push it over the spam threshold. I’m also using stricter rbls like Spamcop, but assigning a lower score if there’s a Spamcop hit. If a mail gets multiple rbl hits in Spamassassin, this will be a better test than just a single rbl, and it’s definitely going to be pushed over the spam threshold. Now, I only have Spamassassin and ClamAV as my spam and virus blockers for the mail server. Hopefully, this new setup will block more spam and decrease the number of false positives.