From: Robert Menschel [mailto:[EMAIL PROTECTED] > > Wednesday, November 16, 2005, 1:47:24 PM, you wrote: > > SL> I guess if this is the case I need to lower > SL> the score for that rule as my kill value is a 3.5, ... > > SpamAssassin scores are optimized for a "this is spam" threshold of 5. > > Anyone who changes their threshold significantly away from 5 (say > above 7 or below 4.5) will NEED to modify several significant rule > scores. Which rules, by how much, will vary by your specific needs. > > (I used to run SA with a threshold of 9, and it worked extremely well > for me, after modifying about 25 rule scores.) > > Moving the threshold down is much more sensitive to flagging errors > than moving the threshold up. > > Yes, if you choose to have your threshold below the level at which one > rule scores spam, then you need to rescore that rule if you're > concerned about ham hits with that rule.
It all depends on your setup. I have SA running here with all the standard rules plus per-user Bayes, Razor, DCC, all of the 0-level SARE rules, and a few others. I haven't modified any of the scores. The overall threshold for the server is 5, but I have set my personal threshold to 4. I see two or three false positives a week and those are usually due to either spam samples sent to this list or code samples that are caught by the Chickenpox rules. Bowie
