Maybe this will sound dumb but wouldn't it be perfectly safe to blacklist "example.com" after all, that isn't a domain your ever going to get mail from.
Ted MySQL Student wrote:
Hi, I'm having trouble catching a particular type of spam, and hoped someone had some time to take a look: http://pastebin.com/d57336542 It doesn't match RAZOR2, or any of the URI lists, and it's only BAYES_50. I have a pretty well-established BAYES db, so I'm surprised it's only BAYES_50. What can I do to block spam like this in the future? Thanks, Alex