The Auto-Whitelist

Introducion

The auto-whitelist, or AWL, tracks scores for your regular correspondents in a small on-disk database. It is enabled using the -a flag to spamassassin or spamd.

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Sometimes it may appear that the AWL is assigning scores the wrong way; read AwlWrongWay for details.

How Does It Work?

The algorithm works using a database of entries. Each entry has a key formed by the From: address of the mail, and the IP address it originated at, and contains a TOTAL score and a COUNT number. The MEAN score is TOTAL/COUNT. The current algorithm works as follows:

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