We just use a negative weight list, and add new domains to the list as needed.  Note that it's not a good idea to have any of your hosted domain in the negative weight list, or ISP domains such as aol, yahoo, msn, etc. as you'll just end up letting a lot of spam through that way.
 
NEGATIVEWEIGHTLIST fromfile F:\IMail\Declude\negativeweight.txt x -25 0
We also use a "positive weight list", which is probably a misnomer since it add to the spam weight....a better name would probably be greylist.  We add known spam domains to this list.  Similar to a blacklist, but we only add enough weight to hold on the greylist, while the blacklist has enough weight to delete.
 
POSITIVEWEIGHTLIST fromfile F:\IMail\Declude\positiveweight.txt x 20 0
You'll probably want to adjust the weights to match your scale.  We use the positive weight to put it just into the hold range, while the negative weight would take an email from the middle of the hold range down to zero.

Darin.
 
 
----- Original Message -----
Sent: Monday, March 29, 2004 3:35 PM
Subject: [Declude.JunkMail] e-commerce counter weights

Most of my false positives are coming from e-commerce sites, where automatic email are generated after an order has been placed.  What sort of counter weighting do you guys use to balance out these types of messages?  I can't decide on anything to identify these types of messages with that spammers don't already try to fake.  Any help would be much appreciated.
 
 
Thank you for making YourNET Connection your connection to the world
 
Jim O'Keefe
Technical Support
@YourNET Connection, Inc.
[EMAIL PROTECTED]
 

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