Hi,
I should have been clearer. I don't even believe they aren't even modifying the image. Indications are that they are simply truncating or adding random bits to the file because even a slightly corrupted image is still displayed.
We already do 'Image checksumming' here with a modified pyzor (patches are available at http://antispam.imp.ch. The problem is that you first have to catch one of those graphics and in the last time they change often. Even with 250 spamtraps we let passing a lot of those mails passing the filter. I've not seen any instant changing pics up to now, but I guess the spammers will soon do this. The results I get from the ocr plugin are a lot better ! Martin _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
