-----Original Message-----
From: ietf-dkim-bounces(_at_)mipassoc(_dot_)org
[mailto:ietf-dkim-bounces(_at_)mipassoc(_dot_)org] On Behalf Of John R. Levine
Sent: Tuesday, April 05, 2011 12:36 PM
To: Tony Hansen
Cc: IETF DKIM WG
Subject: Re: [ietf-dkim] Proposal: Removal of AUID (i= tag/value)
As I mentioned to Murray, any mail with d=iecc.com has an i= based on an
authenticated user. Now that you know that, how will you change your mail
handling?
I would associate reputation with "i=" values, because I know they're "stable"
from example.com, and filter based on that.
A real-world example is gmail.com, which is generally well-behaved but
occasionally gets a stand-out crap-sender. If I know their use of "i=" is
consistent, then I can assess and associate reputation based on those tags.
It's more of a fine-grained assessment than "gmail.com is generally good, so
accept their stuff." Now I can say:
- give gmail.com unknown "i=" values the benefit of the doubt
- give gmail.com "i=" values with bad reputations less room to play
- what's left is gmail.com values that seem to be good, so let them through
It's the first case, i.e. what to do with unknown "i=" values from a domain I
generally trust, that might be useful.
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