Spam in images

[Bill McClain]

On Wed, 06 Sep 2006 10:12:06 -0400
Tom Anderson <tanderso at oac-design.com> wrote:

> Anyway, I still don't see the problem with just training on these 
> emails.  I have seen one or two of these get through in the past month 
> or so, but as soon as I train on it, all future spams of a similar 
> variety are filtered normally.  I don't see that this class of spams is 
> particularly effective.  Nor do they warrant any special treatment. 
> Just train on errors.

I agree, and that's been working for me.

If people want to be more active in attacking problematic spam, I think the
best approach is to preprocess the message and add informative X-headers:
SUSPICIOUS_IMAGE_ATTACHMENT or something. The pass them to bogofilter and let
it work.

If there is data in the message that bogofilter does not see -- the actual
content of binary attachments, for example -- a preprocessor could extract
the info and add header tags, as many anti-spam programs already do.

-Bill
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