Hi Mike,
At 09:53 14-04-2014, MH Michael Hammer (5304) wrote:
The fact is that a vocal constituency led by John Levine made it
extremely clear that MLMs were out of scope and there was zero
interest on the part of the MLM community in discussing ways in
which MLMs could be made to work in an email authentication
framework even if there were any MLM operators willing to do so. His
stated solution has been and continues to be that list operators
should drop any participants who post from a domain publishing
p=reject and to prevent any new participants from joining from a
domain that publishes p=reject. The record is quite clear on this
and is available to anyone who wishes to peruse email archives, blog
posts, etc. I view this as local policy and up to the list operator.
I'm not confident how well this will ultimately work for many
organizations the operators manage lists for. Just to be clear, the
preceding is more of a question than an assertion.
I don't think that there is zero interest from the Mailman community
(that's my interpretation of the Mailman discussions). Mailman
developers do not participate in the IETF. There is an employee of a
well-known company who has been arguing for changes to the mailing
list management software since a long time. The Mailman patch for
DMARC was written by Jim Popovitch and Phil Pennock (
https://mail.python.org/pipermail/mailman-developers/2013-October/023349.html
and
https://mail.python.org/pipermail/mailman-developers/2013-November/023384.html
).
Mailing list traffic is not significant in comparison with overall
mail traffic. At the risk of sounding insensitive there isn't a
business case for some providers to support mailing list traffic. I
would consider John Levine's point about making it out of
scope. There's still the problem of what to do about mailing lists.
Regards,
S. Moonesamy