[dns-operations] Mailing List Behaviour Change

[Royce Williams]

On Sun, Apr 7, 2019 at 2:08 AM Jim Popovitch <jimpop at domainmail.org> wrote:

> 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.
>

Specifically:

https://mailman.readthedocs.io/en/latest/src/mailman/handlers/docs/dmarc-mitigations.html

I'm not sure what version of Mailman these surfaced in.

Royce
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