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Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal

Hector Santos <hsantos@isdg.net> Tue, 13 June 2023 00:01 UTC

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From: Hector Santos <hsantos@isdg.net>
In-Reply-To: <B851CF90-0266-41E9-A4F5-FE282146F443@bluepopcorn.net>
Date: Mon, 12 Jun 2023 20:00:27 -0400
Cc: "Murray S. Kucherawy" <superuser@gmail.com>, dmarc@ietf.org
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References: <30BB83B2-B454-41B8-992B-8E2569802D9C@1und1.de> <CAL0qLwbx6Y=kmB5pQZx8gNqD=rLBYz1vLOX6ngL=wUHHUm0Hjw@mail.gmail.com> <CAOZAAfMtsjcp+aCrwQ2QRc+SHsw3rhwMuTBugRYe44NeiMeKyg@mail.gmail.com> <CALaySJKrXJJXz3pgp85BPswoirhPJtD=uuefVfc9sX1fGkj-iA@mail.gmail.com> <7f854d28-d3b5-fd00-4613-b8baa1217bd7@tana.it> <CALaySJLeJ0xproB6Eg-37sSrNS7XrewUmdKZYVPsVeWddJ90MQ@mail.gmail.com> <CAL0qLwaFNYr0kYPn9ssGQGrSjmTgZnx2u0cxW4UT7M6zSr-sGA@mail.gmail.com> <f0db9dca-5547-7233-8ae6-08b762a92c67@tana.it> <CAL0qLwZGnecMW7ov=BFiXALfUY5m3_mGcQakgmjMbfttxSEWtQ@mail.gmail.com> <B851CF90-0266-41E9-A4F5-FE282146F443@bluepopcorn.net>
To: Jim Fenton <fenton@bluepopcorn.net>
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Subject: Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal
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> On Jun 12, 2023, at 6:02 PM, Jim Fenton <fenton@bluepopcorn.net> wrote:
> 
> On 9 Jun 2023, at 22:35, Murray S. Kucherawy wrote:
> 
>> 
>> You were previously talking about inserting ">" before a line starting
>> "From ", which is typically done on delivery when writing to an
>> mbox-formatted mailbox file, because in that format, "From " at the front
>> of a line has a specific meaning (i.e., "this is a new message").  If that
>> insertion is happening in transport, then a local mailbox convention is
>> leaking out into the transport environment, which means something is
>> misconfigured, and all bets are off.
>> 
>> In any case, it is not a transport conversion anticipated by the section
>> you're quoting, so I've no idea why a DKIM signer might opt to handle it
>> specially.
> 
> I’m not as definite that this is a misconfiguration, but might be a historical artifact.

Very historic - UUCP days and it didn’t come with the “>” prefix. Thats something new to perhaps mask and avoid stripping at the MDA.

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