Marc Perkel <supp...@junkemailfilter.com> wrote:
>
> Rather that just scan for regex strings it's useful to have a way to tell what
> things the message is talking about and reduce those to a single token that
> represents a concept. Then the concepts can be combined to produce rules or
> fed into Bayes for automatic scoring.

Check out SpamAssasin's meta rules.

meta     LOTTO_AGENT      __LOTTO_AGENT && !__HAS_IN_REPLY_TO && !__THREADED && 
!__TO_YOUR_ORG && !__DKIM_EXISTS && !__TRAVEL_ITINERARY && !__AUTO_ACCIDENT

Tony.
-- 
f.anthony.n.finch  <d...@dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
South Biscay, South Fitzroy: Northwesterly 4 or 5, becoming variable 3 or 4.
Slight or moderate. Mainly fair. Moderate or good.

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