On Thu, Dec 02, 2004 at 12:23:37PM -0500, Kevin A. McGrail wrote:
In my experience, newsletters are the #1 casualty of false positives. Order confirmations including Airlines have never been a problem for us.
Just to throw out some numbers:
OVERALL% SPAM% HAM% S/O RANK SCORE NAME 116529 104033 12496 0.893 0.00 0.00 (all messages) 100.000 89.2765 10.7235 0.893 0.00 0.00 (all messages as %) 70.128 78.5520 0.0000 1.000 1.00 0.00 URIBL_JP_SURBL 66.637 74.6398 0.0160 1.000 0.99 0.00 URIBL_OB_SURBL 72.039 80.6879 0.0320 1.000 0.99 0.00 URIBL_WS_SURBL 20.548 23.0158 0.0000 1.000 0.97 0.00 URIBL_SC_SURBL 17.312 19.3919 0.0000 1.000 0.96 0.00 URIBL_AB_SURBL 0.065 0.0721 0.0080 0.900 0.51 0.00 URIBL_PH_SURBL
this is from my weekly SpamAssassin network run. In short, the SURBL lists are generally very clean.