Wed, May 26 2004 18:13
bradley
Exposing the SCL to better understand your "SPAM" ranking
http://blogs.msdn.com/exchange/archive/2004/05/26/142607.aspx Well the EHLO blog comes through once again with a cool post about how the SCL [spam ranking] can be exposed to help a user better understand the filtering process.
This is interesting... this seems backwards to me “This array allows you to choose how aggressive or conservative you want your spam filtering to be by selecting a threshold value above which you consider a message to be spam. If you want to aggressively filter spam, you can choose a fairly low threshold, such as an SCL value of 5, which would catch a higher number of spam messages. However, a higher number of false positives would also be caught. To filter spam more conservatively, you can choose a higher threshold, such as an SCL value of 8, which would catch fewer spam messages, with a lower number of false positives being caught.“
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/e2k3/e2k3/ast_spam_confidence_level.asp
So putting a higher value on that SCL setting does not mean that you'll catch more spam, it actually means you'll catch less spam.
Filed under: Exchange
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