funsec mailing list archives

Re: An OCR plug-in for Spamassassin


From: Nick FitzGerald <nick () virus-l demon co uk>
Date: Mon, 17 Apr 2006 16:46:00 +1200

der Mouse wrote:

Just means you have to render the whole mail before OCRing, rather than
trying to OCR the individual images.

Taking account of all the HTML markup, etc that would be involved, plus 
the number (and size) of legitimate messages that would also have to be 
(at least partially) rendered to rule out that they employ overlaid 
graphics, I suspect that solution goes (well) beyond the point most 
consider a "reasonable effort" for most spam-filtering mail servers.


Regards,

Nick FitzGerald

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