This is a well thought out and clear explanation....... It should be on a
page somewhere. You should add it to the wiki matt :o)

Chris

> -----Original Message-----
> From: Matt Kettler [mailto:[EMAIL PROTECTED]
> Sent: Thursday, August 07, 2003 12:23 AM
> To: [EMAIL PROTECTED]; Spamassassin List
> Subject: RE: [SAtalk] stuff in white list getting tagged
> 
> 
> At 06:10 PM 8/6/03 -0500, Robin Witkop-Staub wrote:
> >I guess maybe the problem is I don't understand how AWL works.  Could
> >someone explain this process?
> 
> Sure, the AWL is actually a very simple system. In short, the 
> AWL is a 
> score averaging system. It keeps track of the historical average of a 
> sender, and pushes any subsequent mail towards that average.
> 
> So if someone that never sent you mail before sends you a 
> mail that scores 
> 20, and then sends you a second mail that would score 2.0 
> without the AWL, 
> the AWL will push the score up to 11 on the second mail. This is auto 
> blacklisting, based on their past history of spam.
> 
> If that same person sent you a mail that scored 0, and then 
> later sent one 
> that scored 7, the AWL would push the score down to 3.5. This is 
> auto-whitelisting based on past history of nonspam.
> 
> But the "auto whitelist" isn't really a whitelist per-se.. it 
> does however 
> have a learning white/blacklist" type behavior.
> 
> Also bear in mind that the "whitelist_from" feature isn't a 
> true whitelist 
> either.. it just does a massive -100 score adjustment. The 
> other rules do 
> still run, but won't rack up enough points for a spam-tag.
> 
> If you really want an absolutely true whitelist, configure 
> procmail to not 
> even call spamc in the first place for those messages. It's 
> really the only 
> way to get an absolutely pure whitelist.
> 
> 
> 
> 
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