Sometimes, we make life very difficult for spam filters. I was reminded of this today when checking the quarantine for the mailbox that we use for our weblog.
Caught in the quarantine were several messages generated by the blog software, which warned us of some spammy activity — spammers abusing the blog’s comments and trackbacks facilities. Of course, the warning messages included the spammy text of the comments and trackbacks, which caused our spam filter to quarantine the warnings.
Naturally, a quick addition to the whitelist prevented the problem from happening again, but it’s food for thought.