What do I do? I got rid of Spamassassin after being challenged by someone on HN or Reddit, can't recall which. Spamassassin is pretty effective but was consuming too much of my time.
So I stopped. I analyzed mail for a few weeks to look for patterns in the wild with my server. I came to the conclusion to block all but the top level TLD's. That decision yielded very positive results.
I then wrote a simple SPAM blocking server to allow me to block habitual or suspicious TLD SPAM sending domains, as well as a few custom checks for common sense things.
As a result of those two decisions, I am now at or better at blocking SPAM than I was with Spamassassin and 2 other related tools I just remembered I also stopped using, spamass-milter and postgrey.
So I stopped. I analyzed mail for a few weeks to look for patterns in the wild with my server. I came to the conclusion to block all but the top level TLD's. That decision yielded very positive results.
I then wrote a simple SPAM blocking server to allow me to block habitual or suspicious TLD SPAM sending domains, as well as a few custom checks for common sense things.
As a result of those two decisions, I am now at or better at blocking SPAM than I was with Spamassassin and 2 other related tools I just remembered I also stopped using, spamass-milter and postgrey.