Re: DMARC methods in mailman --- [LEDE-DEV] DMARC related mass bounces / disabled subscriptions (fwd) Jo-Philipp Wich: [LEDE-DEV] DMARC related mass bounces / disabled subscriptions

Michael Richardson <mcr+ietf@sandelman.ca> Mon, 19 December 2016 17:59 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: IETF general list <ietf@ietf.org>
Subject: Re: DMARC methods in mailman --- [LEDE-DEV] DMARC related mass bounces / disabled subscriptions (fwd) Jo-Philipp Wich: [LEDE-DEV] DMARC related mass bounces / disabled subscriptions
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References: <20161218220828.14035.qmail@ary.lan> <b3da92dd-b0b8-a6c0-8d69-e733ad3e5fc6@gmail.com> <alpine.OSX.2.11.1612182027050.19818@ary.qy> <1ffbca1e-a08a-1551-ea56-eef1b78e2037@gmail.com> <E7616959-2814-45EC-9CFE-3189C2F27D57@dukhovni.org>
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Date: Mon, 19 Dec 2016 12:59:35 -0500
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Viktor Dukhovni <ietf-dane@dukhovni.org> wrote:
    >> Yes, but *today* as an IETF list admin I don't have that
    >> choice. Objectively I have exactly two choices: advise the user to
    >> change email provider, or rewrite the From for every single
    >> subscriber. I'm not happy with that choice, but unless somebody in the
    >> IETF's IT support does something, that is the choice I have.

    > A third choice is to configure the list to neither add footers, nor
    > modify the subject line.  At which point you're no longer breaking DKIM
    > signatures, and DMARC passes.

I don't understand how it can "pass".
It's still arriving from an IP address not listed in the SPF, claiming to be
From the provider.

--
Michael Richardson <mcr+IETF@sandelman.ca>ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-