On Wed, 2003-10-01 at 12:27, Radek Doul�k wrote:
> Hi all,
>
> before I start implementing spam filtering for evolution, I would like
> to discuss my plan. Please read the whole mail and comment. I am
> describing the model from user view and then implementation details
> and some things to think about. I took Ettore's model as a base and
> modified it a little bit - mostly simplified.
I've had great success blocking emails that try to obfuscate their
content using a few rules that Evolution is already capable of. I hope
these rules will be helpful to you:
HTML NONSENSE
Breaking words with inappropriate use of comments
Regex Match Message Body: -->[a-z]{2,4}<!--
Markup in the title
Regex Match Message Body: <title>[^/]+<!--[^/]+</title>
Invalid closing tags used to break words
Regex Match Message Body: </[^-="<>]+ [^="<>]+ [^="<>]+
Invalid comments
Regex Match Message Body: <![a-z]>
Random character that take the form of words are easy to spot, but
regex.h doesn't support the multiline matching required to be 100%
successful. I'm still refining this rule, which looks for words without
vowels:
Regex Match Message Body: \<[qwrtpsdfghjklzxcvbnm]+\>[
\t]+\<[qwrtpsdfghjklzxcvbnm]+\>[ \t]+\<[qwrtpsdfghjklzxcvbnm]+\>
--
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Guilty of stealing everything I am.
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