How does an SSP-like protocol do that? Assertions like "I am a phish
target" don't do it.
Why not?
Because you (the generic you, whoever publishes SSP) aren't credible short
of some reputation system which would make SSP irrelevant anyway.
It's fine to make statements about your own practices, like "I sign
everything" or "All of my mail is composed in iambic pentameter" since
that reflects things you have control over. Claiming you're a phish
target is making assertions about the behaviors of zillions of other
senders who you don't even know.
R's,
John
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