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Re: [ietf-smtp] New Version Notification for draft-crocker-email-deliveredto-00.txt

John R Levine <johnl@taugh.com> Sun, 14 February 2021 22:56 UTC

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Date: Sun, 14 Feb 2021 17:56:05 -0500
Message-ID: <65ab1614-52ac-1eab-988c-514f453d76a@taugh.com>
From: John R Levine <johnl@taugh.com>
To: Pete Resnick <resnick@episteme.net>
Cc: Dave Crocker <dcrocker@bbiw.net>, ietf-smtp@ietf.org
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References: <20210204234602.6DB4D6D63596@ary.local> <6D7EBCFD-C4C1-4623-BB95-4F6114A93C3B@episteme.net> <a6e19810-4fe4-3b2a-8c79-0f9397b77c9f@dcrocker.net> <2F7AAE37-2D9D-4CFD-9FC1-8E174BA13693@episteme.net> <b1a67354-2edb-8ffd-af6b-aa776219d9d4@dcrocker.net> <54BC4A2C-9B44-4369-AB16-85716CD404E3@episteme.net> <57235.1613342731@turing-police>
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Subject: Re: [ietf-smtp] New Version Notification for draft-crocker-email-deliveredto-00.txt
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>> To the contrary: I am perfectly happy if there is no defined order or
>> constraint on the order, but I do think it's worth saying that they MAY
>> appear in either order (i.e., no implementation should ever act on the
>> order that they happen to appear in).

In practice a message may have several Delivered-To headers interspersed 
with Received, depending on the internal forwarding setup.

I'm with Dave here -- there's nothing to standardize here beyond noting 
that Delivered-To is a trace header so whever it's added, it goes at the 
top.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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