On 18/12/2016 23:15, S Moonesamy wrote:
...
Yes. We might end up having to consider whether to attribute
semantics to the <display-name> as a way to solve the problem. Let's
assume that 20% of IETF mailing list subscribers use a "p=reject"
domain name in the "From:" field and that they are no longer allowed
to post messages to the mailing list because of the policy advertised
by that sending domain. What should the mailing list moderator do in
response to complaints from those subscribers?
Send them a canned message stating that the only solution available
to them is changing to a different From address that does not have
this issue. What else can they do?
But...
On 19/12/2016 06:05, Dave Crocker wrote:
...
I believe some mailing lists have adjusted to detection of DMARC (maybe
just when p=reject?) for a given author by making author From: field
changes /only/ for such authors. They don't make changes when mail is
from non-DMARC authors.
If ARC fails to solve the problem, I am certain the IETF will have no
choice but to do this (for both p=reject and p=quarantine, I suspect).
Brian