On 12/15/2009 11:55 AM, Michael Scheidell wrote:
On 12/15/09 11:49 AM, Charles Gregory wrote:
On Tue, 15 Dec 2009, Matt Garretson wrote:
Heartily agreed. Site-wide bayes here (single database for 2000+
users) catches 40% of the spam here.
But what is the FP rate? Is it safe for an ISP with a widely varied
user base to use site-wide Bayes?
I find that you should reduce scores on the high and low end (bayes_00
and bayes_95) and the 'meta rules' that might combine them also.
(so, yes, an ISP, or for our hosted clients, we have modified the bayes
scores. . if one client is a plastic surgeon, one is a stock broker, and
one is a mortgage broker, each will be getting wildly different ham)
setting up a 'per domain' bayes might work, might be tricky, especially
if an inbound email is going to several domains, and only if you are
doing B2B (commercial clients)
I'm guessing that you'd also want to change the autolearn thresholds to
be stricter? Like only auto-learning if it scores below -2 or above +10?
(That might be an amavisd-new feature.)
