ietf-asrg
[Top] [All Lists]

RE: [Asrg] 7. Best Practices - DNSBLs - Article

2003-08-14 09:16:33
"Yakov Shafranovich" <research(_at_)solidmatrix(_dot_)com>

I am not suggesting that a consent system should use ALL available 
sources, just more then one. Two DNSRBLs or a DNSRBL combined 
with a filter might be better than relying on SPEWS.org or some other 
DNSRBL as a sole source of information. Decisions on spam should 
not be based on a single source alone.

Why? If that single source is reliable and does a good job of implementing
the policies I choose for my mail servers (eg. "We don't want mail from 
dialups here.") , what is the point of incurring the extra load of querying 
more than one, especially if the second is going to be much more resource 
intensive? (eg. A content filter behind a DNSBL.)

jason

_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg