As I'm sure many have experienced lately, spam containing images (remote images and embedded or attached ones) are becoming more and more common. These are also often filled with randomized text to poison any Bayesian filters.

How are you dealing with this?

Our company is using GFI MailEssentials, which up until this became common was a quite good product. GFI hasn't been very responsive at all lately though, and has just the last few days responded to this "new" threat with a patch that handles remote images.

There's talk about OCR engines to recognize both text and "scanner watermarks", but are there any good proucts out there? DNS blacklists can only do so much.

Edited by masken (2006-11-21 10:59 PM)
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