On Wed, 15 Apr 2009 21:29:18 -0400 "Kevin A. McGrail" kmcgrail@pccc.com wrote:
Not speaking on behalf of SURBL but using SURBL to block email is not a recommended usage. From http://www.surbl.org/
"direct blocking at the MTA level is not recommended. It's generally better to use SURBLs along with multiple, weighted factors, as SpamAssasssin does."
Hmmm...interesting
However, additionally, why are so many messages to the debian mailing list hitting surbl domains? Even the anti-spam mailing lists don't have this problem that much. If you are discussing questionable domains use <domain>-munge.com for example.
I think they just have a low threshold for bounces. One or two bounces enough for the kick-score (percentage of bounced emails) to start getting towards the threshold for unsubscription.