[dns-operations] Mailing List Behaviour Change

[Jim Popovitch]

On Sat, 2019-04-06 at 18:37 -0400, John Levine wrote:
> In article <1554580810.23743.11.camel at domainmail.org> you write:
> > > 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.
> 
> I'm still pretty sure you're mistaken.
>
> All of my domains publish p=none and I don't see MLMs munging my mail
> unless they munge everyone's mail.

It's a set of configurable options in Mailman where the list can be configured
to reject, wrap, munge, or hold, DMARC'ed domains with p=reject, p=quarantine,
or p=none.

-Jim P.