Using multiple spam categories

Greetings:

I've noticed a slight decrease in filtering effectiveness when you jam
too many messages into two few ifile categories.  Those halfwit Nigerian
give-me-your-bank-account messages were sneaking through until I finally
separated them into their own directory and ifile category.

ifile was a real timesaver here; I grabbed 10 messages that had gotten
through, used them to create a small .idata using the category "fraud",
added some valid mail as a comparison, and ran ifile against my entire
spam collection to find anything similar.  This gave me just over 1000
hits with very few false matches.  Moving those 1000 messages into
the fraud category and recreating .idata has effectively weeded those
puppies out.

I'm going to do the same thing using two other categories, one for
"improve your credit/make money" crap, and the other for porno messages.
The wording seems just different enough to justify it.

-- 
Karl Vogel               ASC/YCOA, Wright-Patterson AFB, OH 45433
[email protected]                   http://www.dnaco.net/~vogelke

Sign in a Pennsylvania cemetery:
   "Persons are prohibited from picking flowers from any but their own graves"