[Bug 4512] Different approach to obfuscation rules

[bu...@bugzilla.spamassassin.org]

http://bugzilla.spamassassin.org/show_bug.cgi?id=4512





------- Additional Comments From lwilton@earthlink.net  2005-08-02 21:39 -------
Subject: Re:   New: Different approach to obfuscation rules

This is very similar to an idea that has been floated before, perhaps in a
different bz entry than the one you mentioned.

I personally believe the concept has potential merit, but is lacking a
practical demonstration to indicate one way or the other if the time to do
the substitution will pay off.  Of course, this would also require rewriting
quite a few rules to take advantage of it; but that is mostly a nasty
bookeeping issue.

It is necessary to keep the original text around for easy observation.  It
is pretty easy to determine that something is spam simply by observing the
pseudo-encryption the spammers use to try to get around character matches.
So you need to have essentially a 4th body-type classification.  The current
'body' would be 'unencrypted' or some such, and the new type would be
'clean' or some such.  SA already has much of this concept present, but it
doesn't extend far enough that the rules can get to it.

        Loren





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