https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6048





--- Comment #24 from Steve Freegard <[email protected]>  2009-01-22 
11:48:09 PST ---
(In reply to comment #23)

Thanks for the technical explanation.

> I'm okay with whatever SA wants to do.   I dont think URIBL ACL policy needs 
> to
> change.  With the public DNS infastructure we have, I dont see  any other
> effective way to stem the abuse.

Just an idea - unless I'm missing something - why don't you simply move the
ACLs up a level instead to the uribl.com zone so that if you blacklist an IP
then it prevents the IP address from being able to query the NS records for
black/grey/red.uribl.com (e.g. the nameserver returns 'REFUSED'; although
NXDOMAIN might work better for negative caching) granted you'll have to wait up
to 24 hours before the host will actually be prevented from querying; but it
would still do what you need it to.  That way the traffic stops dead at
Prolexic nameservers instead of the public mirrors and everyone's happy.


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