Apropos the recent discussion, it strikes me that this exchange of email
w/ Yahoo might be of interest:
On one of the pages pointed to by Yahoo's blog announcement of their
DMARC policy change, they posted this invitation: "If you are a
developer of mailing list software and would like help adding features
to allow participants from domains with DMARC p=reject, please contact
us at dmarc-help(_at_)yahoo-inc(_dot_)com."
So... I took them up on it, by sending this:
-------
From: Miles Fidelman [mailto:mfidelman(_at_)meetinghouse(_dot_)net]
Sent: Saturday, April 12, 2014 6:28 PM
To: dmarc-help(_at_)yahoo-inc(_dot_)com
Subject: do you support Original-Authentication-Results?
Folks,
I'm not a mailing list software developer, but I'm sure interested in
patching the software we use (Sympa).
The most pressing question right now is whether your DMARC
implementation supports Original-Authentication-Results - which would
allow us to actually support DMARC transparently to list subscribers.A
related question is knowing which other large ISPs, who honor p=reject,
also honor Original-Authentication-Results.
Miles Fidelman
---------------
To which, I received this in response:
-------- Original Message --------
x
From: Mailing Help <dmarc_help(_at_)yahoo(_dot_)com>
Reply-To: Mailing Help <dmarc_help(_at_)yahoo(_dot_)com>
Subject: Subject: do you support Original-Authentication-Results?
To: mfidelman(_at_)meetinghouse(_dot_)net
<mfidelman(_at_)meetinghouse(_dot_)net>
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="833011919-776038816-1397588475=:6407"
Greetings Miles.
Yahoo Mail is not currently supporting OAR headers. We’re reviewing
possible solutions in regards to OAR headers and how to act upon them
from trusted third parties. Our primary goal at this time is to
eliminate Mail Spoofing for email that does not originate from our mail
servers.
I’d like to work with you in the near future if and when we’d like to
test new changes. Can I add you as a contact Miles?
Cheers,
Kendrick - Yahoo Mail
---------------
Talk about not helpful.
Miles Fidelman