Found this posting to the spamassassin-users list on my quest to make life a bit harder for the image spammers, looks like it’s working already.. 🙂
Yes, hits=5.433 tag=-100 tag2=5 kill=5 tests=BAYES_00, DK_POLICY_SIGNSOME, FORGED_RCVD_HELO, HELO_DYNAMIC_SPLIT_IP, HTML_10_20, HTML_IMAGE_ONLY_32, HTML_MESSAGE, MIME_HTML_ONLY, RCVD_NUMERIC_HELO, TVD_FW_GRAPHIC_NAME_LONG
The important part there to note is that the Bayesian spam value was very little, but the rest of the tests correctly flagged it as spam.
It’s now picking up a virtually all that annoying image spam that used to slip through.
Awesome. 🙂