From: "David Koblas" <koblas(_at_)mailfrontier(_dot_)com>
I've been reading this discussion for a while and I have one core
question,
which is why is this an "antispam certificate". At the end of the day,
we've all got a slightly different idea of what is and isn't acceptable as
a
message (yes, there is a very large common ground).
Why not focus on Verifiable/Validated senders and let other systems worry
about the policy for specific senders. It strikes me that it would be
easy
to have a system that adds a single new header "ValidatedSender:
user(_at_)isp(_dot_)com; ...stuff including signature..." Then other systems
could
make a policy decision based on that _verifiable_ header.
By itself, it doesn't mean anything. Every spammer will insert it on their
own and send through an open relay. A spammer could have 10,000 accounts on
hotmail and each one would be a legitimate hotmail account.
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