On 04/09/2013 08:07 PM, John Levine wrote:
Quoting Nathaniel Borenstein [1]:
"One man's blacklist is another's denial-of-service attack."
Email reputation services have a bad reputation.
They have a good enough reputation that every non-trivial mail system
in the world uses them. They're not all the same, and a Darwinian
process has caused the best run ones to be the most widely used.
There seems to be a faction that feel that 15 years ago someone once
blacklisted them and caused them some inconvenience, therefore all
DNSBLs suck forever. I could say similar things about buggy PC
implementations of TCP/IP, but I think a few things have changed since
then, in both cases.
There's an inherent problem with letting 3rd parties affect email
traffic, especially when there's no way to hold those 3rd parties
accountable for negligence or malice.
Keith