On Wed, 22 Jul 2009, Aaron Bennett wrote:
We're noticing that much of the spam which makes it through our filter
hits the spamhaus pbl rule. However, that rule by itself scores only
0.9.
As per other recent threads, the PBL has become so reliable that it
is now considered 'safe' to use as an RBL blacklist check at the MTA
level before coming into spamassassin. Just use 'zen.spamhaus.com' for
your check instead of sbl or xbl. If you don't have RBL checking before
you invoke spamassassin (but you really should) then you can just score
the PBL rule 10 or more....
- Charles