-----Original Message-----
From: ietf [mailto:ietf-bounces(_at_)ietf(_dot_)org] On Behalf Of John Levine
Sent: Wednesday, November 02, 2016 12:56 PM
To: ietf(_at_)ietf(_dot_)org
Subject: Re: IETF Mailing Lists and DMARC
In article <CAPt1N1k1wg9mbN-guuarFP0NvX7v-suOY-bP=TDEOCVhK-
epmg(_at_)mail(_dot_)gmail(_dot_)com> you write:
And yet it is still happening, despite there being a great deal of
discussion in the archives... :/
Yes, because at this point, all of the solutions are worse than the problem.
See this page for a roundup of DMARC mitigations:
http://wiki.asrg.sp.am/wiki/Mitigating_DMARC_damage_to_third_party_ma
il
The work on ARC is coming along fairly fast. There was a second compatibility
event a couple of weeks ago among various implementations, and people
tell me there should be usable libraries around the end of the year. Once
there's an ARC addon for Mailman and we use that, the DMARC damage
should drop considerably, without us having to change the way we use our
lists.
It's not clear to me that this is true John. DMARC Validators will need to take
ARC into consideration and we don't know what adoption will look like other
than a handful of players at this point.
Mike