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RE: IETF Mailing Lists and DMARC

"MH Michael Hammer (5304)" <MHammer@ag.com> Wed, 02 November 2016 17:05 UTC

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From: "MH Michael Hammer (5304)" <MHammer@ag.com>
To: John Levine <johnl@taugh.com>, "ietf@ietf.org" <ietf@ietf.org>
Subject: RE: IETF Mailing Lists and DMARC
Thread-Topic: IETF Mailing Lists and DMARC
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Date: Wed, 02 Nov 2016 17:04:56 +0000
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References: <CAPt1N1k1wg9mbN-guuarFP0NvX7v-suOY-bP=TDEOCVhK-epmg@mail.gmail.com> <20161102165600.67029.qmail@ary.lan>
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> -----Original Message-----
> From: ietf [mailto:ietf-bounces@ietf.org] On Behalf Of John Levine
> Sent: Wednesday, November 02, 2016 12:56 PM
> To: ietf@ietf.org
> Subject: Re: IETF Mailing Lists and DMARC
> 
> In article <CAPt1N1k1wg9mbN-guuarFP0NvX7v-suOY-bP=TDEOCVhK-
> epmg@mail.gmail.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

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