Re: [dmarc-ietf] Apropos of the de-munging draft
John R Levine <johnl@taugh.com> Sun, 02 August 2020 21:23 UTC
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Date: Sun, 02 Aug 2020 17:23:36 -0400
Message-ID: <60eab528-e73c-79f8-f530-783bf49c773f@taugh.com>
From: John R Levine <johnl@taugh.com>
To: "Murray S. Kucherawy" <superuser@gmail.com>, John Levine <johnl@taugh.com>
Cc: IETF DMARC WG <dmarc@ietf.org>, Alessandro Vesely <vesely@tana.it>
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Subject: Re: [dmarc-ietf] Apropos of the de-munging draft
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>>> Looking at the steps required to carry out the proposed unmunging, "a lot >> easier" doesn't seem to be an accurate measurement. >> >> In python it's about two lines since there are well debugged libraries >> to handle MIME. Same in most other languages. > > I agree, the code to do this is easy and well tested, and it works so long > as the MLM is doing the mutation in exactly the same way the verifier will > undo it. The concern comes down to two different MIME library implementers > disagreeing on their choices for where an extra newline might be helpful, > for example. I was actually thinking of wrapping the original message as an attachment, sort of like a one-message digest. You can always recover the original message, the problem is that MUAs display attached messages badly, and if you unwrap you lose the useful changes the list manager makes like subject tags and footers with unsubscribe instructions. Regards, John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly
- [dmarc-ietf] Apropos of the de-munging draft John R Levine
- Re: [dmarc-ietf] Apropos of the de-munging draft Alessandro Vesely
- Re: [dmarc-ietf] Apropos of the de-munging draft John Levine
- Re: [dmarc-ietf] Apropos of the de-munging draft Murray S. Kucherawy
- Re: [dmarc-ietf] Apropos of the de-munging draft John R Levine
- Re: [dmarc-ietf] Apropos of the de-munging draft Alessandro Vesely