I sign no mail==I only sign other peoples mail (third party signer)
I sign some mail==I sign some mail from my domain but don't want to be
sued for you getting unsigned spam purportedly from me.
thanks
Bill Oxley
Messaging Engineer
Cox Communications, Inc.
Alpharetta GA
bill(_dot_)oxley(_at_)cox(_dot_)com
-----Original Message-----
From: ietf-dkim-bounces(_at_)mipassoc(_dot_)org
[mailto:ietf-dkim-bounces(_at_)mipassoc(_dot_)org] On Behalf Of Hallam-Baker,
Phillip
Sent: Thursday, September 07, 2006 9:53 AM
To: ietf-dkim(_at_)mipassoc(_dot_)org
Subject: RE: [ietf-dkim] user level ssp
What is the difference on the recipient side between 'I sign no mail'
and 'I sign some mail'?
The recipient will not look at the policy record if there is a valid
signature and if there is no signature the fact that it might have been
signed is irrelevant.
The only policy that has use to a recipient is to know that every
message without exception is signed. Otherwise there is no utility in
the policy record.
-----Original Message-----
From: ietf-dkim-bounces(_at_)mipassoc(_dot_)org
[mailto:ietf-dkim-bounces(_at_)mipassoc(_dot_)org] On Behalf Of Wietse Venema
Sent: Thursday, September 07, 2006 7:23 AM
To: ietf-dkim(_at_)mipassoc(_dot_)org
Subject: Re: [ietf-dkim] user level ssp
Hallam-Baker, Phillip:
I think it is entirely likely that bigbank.com would have a
situation
where the mail servers for its east coast offices were adding
signatures but the ones for the west coast were not. The
part that is
less easy to see is whether there is value to the short
term fix. It
is probably easier to just do the deployment.
But it is not certain that this will be the case.
This hypothetical bank can use the hypothetical "I sign some
of my mail" policy until the DKIM roll-out is complete, and
then transition to the "I sign all my mail" policy.
A per-user mechanism is not the obvious solution for this problem.
Wietse
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