On 5/7/2014 7:48 AM, Hector Santos wrote:
I haven't had time to do a careful review of the DMARC specification,
but I do note one obvious omission: Wouldn't it have been helpful to define
an enhanced status code for a p=reject failure which mailing lists
could detect and take appropriate action, i.e. counting this as a failure
of the sender, not the recipient?
That was part of the discussions. But for backward compatibility, a
ACCEPT and DISCARD could be a deployment optional alternative to a
reject action.
Sorry, it wasn't part of the DMARC discussion but it was discussed
with with SSP and ADSP. See RFC6377 "DKIM and Mailing Lists".
With ADSP "dkim=discardable" policy, the deployed SMTP server could
process it at DATA and reject it as a 550 rather than do ACCEPT and
DISCARD. A reject mode would cause a list sender problem.
With DMARC "p=reject" policy, it would the opposite semantics to offer
the reject as a accept/discard.
--
HLS