Re: [IETF] DMARC methods in mailman
Theodore Ts'o <tytso@mit.edu> Mon, 26 December 2016 14:49 UTC
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Date: Mon, 26 Dec 2016 09:49:01 -0500
From: Theodore Ts'o <tytso@mit.edu>
To: Viktor Dukhovni <ietf-dane@dukhovni.org>
Subject: Re: [IETF] DMARC methods in mailman
Message-ID: <20161226144901.f4ym2d6bzz5zxafp@thunk.org>
References: <m1cKvWY-0000HFC@stereo.hq.phicoh.net> <EA2191A9-CF62-4984-8275-E0295A207237@gmail.com> <35FC8FF8-A4E6-423F-994C-304B4B3AAF94@dukhovni.org>
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On Sun, Dec 25, 2016 at 01:05:59PM -0500, Viktor Dukhovni wrote: > > The need for email origin authentication to specify that "Sender" preempts > "From" has been well understood for a long time before there there was DMARC. > If there is to be a non-broken replacement, it must correct this design error > and place the "burden" of dealing with that on any MUAs that fail to display > Sender (as e.g. from <sender> on behalf of <author>). But if MUA's do this, then it becomes trivial to phish consumers, which was the original excuse for DMARC. So if MUA's do this, eventually Yahoo and the other big mail providers will promulgate a non-standard "fix" that will bounce message with Sender lines that aren't equal to the From field. And then what will you do? Hint: stop using mail providers that obey non-standard mail protocols, because they *will* break you eventually, and/or randomly. - Ted
- Re: [IETF] DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Theodore Ts'o
- Re: DMARC methods in mailman Randy Bush
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman John R Levine
- Re: DMARC methods in mailman S Moonesamy
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman Theodore Ts'o
- Re: DMARC methods in mailman S Moonesamy
- Re: DMARC methods in mailman Alexey Melnikov
- DMARC stats for IETF mailing lists (was DMARC met… Alexey Melnikov
- Re: DMARC methods in mailman S Moonesamy
- RE: DMARC methods in mailman Christian Huitema
- Re: DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Randy Bush
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Philip Homburg
- Re: [IETF] DMARC methods in mailman Yoav Nir
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Ted Lemon
- Re: [IETF] DMARC methods in mailman tom p.
- Re: [IETF] DMARC methods in mailman Patrik Fältström
- Re: [IETF] DMARC methods in mailman Philip Homburg
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman John C Klensin
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman John Levine
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- RE: [IETF] DMARC methods in mailman Christian Huitema
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman S Moonesamy
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman John C Klensin
- Re: [IETF] DMARC methods in mailman Dave Crocker
- RE: [IETF] DMARC methods in mailman Christian Huitema
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni