From "Frido Otten" <fr...@0tten.nl>
So is there anything that needs to be done to prevent false positives
happening right after the shutdown?
They said they were emptying the zone files, not actually "listing the
world" - so this shouldn't cause false any positives - but might cause
some false negatives, especially for anyone who was overly relying on
SORBS in their spam filtering? But yet - after some years - lists like
this - once they've been dead for many many years - do sometimes "list
the world" as a final push to get others to stop using them - if that
even ever happens with SORBS? And if it ever did, I doubt that would
happen anytime soon.
But definately make sure that your spam filter is ONLY ever acting on
specific and valid SORBS return codes - and NOT treating ANY query being
resolved that isn't NXDOMAIN - as a listing. Anyone misusing SORBS in
that way - might one day have a very bad day. But that's a general truth
for all DSNBLs - make sure your rules/setup for its usage only treat it
as a valid listing when specific return codes are returned, that match
that DNSBL's instructions, and thus NOT taking action just because some
IP address was resolved by the query.
(I think any built-in/default SpamAssassin rules for SORBS - already
does all of this correctly.)
Rob McEwen, invaluement
