I've been getting a _lot_ of spam recently which has been defeating my
spamassassin configuration - all of it has the same general form... A
message with auto-generated prose and an image. I installed FuzzyOCR
and this helped, but one particular variant still slips through.
The problematic spams all embed a GIF image which confuses gocr (in
spite of being easily human-readable) - though I'm not sure why. Three
images which defeat FuzzyOCR for me are:
http://temporary.shic.dynalias.net/Evil_Spam_Samples.zip
I would like to know if there is a straightforward way either (a) to
configure FuzzyOCR to decode the text, or (b), assuming that is hard, a
way to identify this kind of 'strange' GIF and apply a static score to
them (at least as a temporary measure?)
Thanks in advance for any pointers...
