Good afternoon, Eric,
Hi Eric!
On Mon, 21 Jul 2003, Eric Hart wrote:
> I've been writing custom SA rules for awhile, and have a pretty good
> grasp now on regular expresssions and BODY and HEADER rules. Search as
> I might, I have not found sources of information on advanced
> rulewriting. Can anyone point me to info about:
>
> URI rules
> META rules
> Use of PERL IF expressions in SA rules.
> CF processing algorithm
Matt Kettler's howto at
http://mywebpages.comcast.net/mkettler/sa/SA-rules-howto.txt doesn't cover
these, unfortunately.
The best sense I have about META rules is that they're used to
combine two or more other matches; example from
http://maxime.ritter.eu.org/Spam/spam-rc.php :
# Seen On Tv ? What does it prove ?
body FR_VU_TV_NATION /\bVU . LA (?:T\.?V\.?|t.l.(vision)?)
Nation(n)?ale/i
describe FR_VU_TV_NATION Seen on national TV (french).
lang fr describe FR_VU_TV_NATION Vu a la télé nationale en Francais.
score FR_VU_TV_NATION 2
# Nobody in France speaks speaks about "national TV" (We prefer to speak about "big
# chanels" or just "seen on TV"). Only translated spams do. Dont know for Québec and
# other french speaking countries. (mais ça m'intéresse, si tu est Canadien, Suisse,
# Belge, Africain ou autre, n'hésites pas a m'envoyer un mail).
body __FR_VU_TV /\bVU . LA (?:T\.?V\.?|t.l.(vision)?)/i
meta FR_VU_TV (__FR_VU_TV && ! FR_VU_TV_NATION)
describe FR_VU_TV Seen on TV (french).
lang fr describe FR_VU_TV Vu a la télé en Francais.
The paired underscores before the name indicate a rule that
shouldn't, by itself, contribute a score to the final message.
The above URL also has some URI rules.
perldoc Mail::SpamAssassin::Conf has some text describing meta and
uri.
Cheers,
- Bill
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