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Re: [Emailcore] Ticket #8: Need a registry of header fields that are Ok to add after submission

Ned Freed <ned.freed@mrochek.com> Tue, 17 November 2020 13:25 UTC

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Date: Tue, 17 Nov 2020 05:22:55 -0800
From: Ned Freed <ned.freed@mrochek.com>
In-reply-to: "Your message dated Tue, 17 Nov 2020 12:51:28 +0100" <9a964fb0-f29c-904b-1b2e-98d4eb71f36e@tana.it>
References: <e64e5ab8-fe18-7708-f8bf-6c5ee60658b6@isode.com> <9a964fb0-f29c-904b-1b2e-98d4eb71f36e@tana.it>
To: Alessandro Vesely <vesely@tana.it>
Archived-At: <https://mailarchive.ietf.org/arch/msg/emailcore/ob_WxH644Vb-unV8-lSsRZYhUrE>
Subject: Re: [Emailcore] Ticket #8: Need a registry of header fields that are Ok to add after submission
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> On 16/11/2020 18:10, Alexey Melnikov wrote:
> >
> > IANA is requested to create a new subregistry for email header fields that can
> > be added to a message header section by a “relay” and/or “delivery” SMTP
> > system. The new subregistry would show whether a header field can be added by a
> > “relay”, “delivery” system or both.


> How about fields set by the MUA and by the MSA?  If we do that distinction, it
> would be worth to consider all MxAs, for x=U, S, T, D.

I'm not sure there's a clear distinction to be made between what an MUA does
and what an MSA does - the responsibility split in some cases puts most of the
MUA function in the MSA - but yes, I think it does make sense to include
submission. If only to be able to say that submitted messages really shouldn't
insert a return-path field...

				Ned



















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