John Sweet wrote:
On Fri, May 2, 2014 at 7:52 AM, John R Levine <[email protected]
<mailto:[email protected]>> wrote:
The advice hasn't changed: don't set a DMARC policy other than
p=none on domains used by human users. We know that some large
domains have disregarded that advice, but it doesn't make it any
less correct.
Given that this is the world we live in now, maybe it's a good idea to
say, "... because when you do, the following will break: mailing-list
posts, "forward this article" links, ... (etc.)" The problem being
that it's probably impossible to characterize all of the email edge
cases and side effects individual users have become accustomed to,
though from the current screams of pain, we can probably deduce which
ones are the most prevalent.
It's not at all clear to me whether the pressure will build up to
convince the large domains to roll back their policies, or to convince
myriad small providers and web page designers to adjust theirs. The
only places I've even heard about deployed DMARC policies breaking
mailing lists, are this mailing list and the IETF one.
Well maybe you don't subscribe to:
- nanog
- mailops
- mailman support
- sympa support
- any of the 100 or so lists hosted on lists.uua.org (Unitarian
Universalist Association)
- any of the 2 dozen lists that I happen to host
- any of the myriad other lists that have been hit (Yahoo claims to know
they've impacted 30,000 sites - how many lists does that translate to?)
- a bunch of magazines that have covered this (PC Magazine comes to mind)
So, perhaps you're simply not paying attention.
Miles Fidelman
--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
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