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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