[dns-operations] Mailing List Behaviour Change

Jim Popovitch jimpop at domainmail.org
Sat Apr 6 22:08:59 UTC 2019

On Sat, 2019-04-06 at 16:00 -0400, Jim Popovitch wrote:
> On Sat, 2019-04-06 at 15:07 -0400, John Levine wrote:
> > In article <1554071561.15150.1.camel at domainmail.org> you write:
> > > Might I suggest that you also wrap messages with a p=none policy.  Per the
> > > spec, p=none is for testing, but  that doesn't mean "do nothing".  Wrap the
> > > p=none messages so that those senders too will see how DMARC impacts them.
> > 
> > I think you're confusing p=none with pct=0.  The former most
> > definitely means to do nothing.
> 7489 says that "p=none" receivers are to do nothing with regard to delivery
> (reception), but it ends there, imho.  Mailman (and other MLMs) handle p=none
> during refection and can serve a valuable purpose by showing the affects of
> DMARC on the sender's domain.

<sigh> by "refection" I mean reflection (or infection depending on your point
of view of MLMs)

-Jim P.

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