On 2025-02-23 at 15:01:15 UTC-0500 (Sun, 23 Feb 2025 21:01:15 +0100)
Steffen Nurpmeso via Postfix-users <stef...@sdaoden.eu>
is rumored to have said:
Hello.
Yes, unfortunately online on a Sunday, i should better have let
it. Anyhow. I wanted to ask for long why postfix does not
support the RFC 9057 Author: header,
I would think that it is because new headers aren't something a MTA
generally needs to specifically support. Quoting the RFC:
In effect, the From: field has become dominated by its role as a
handling identifier. The current specification augments this altered
use of the From: field by specifying the Author: field, which
identifies the original author of the message and is not subject to
modification by Mediators.
As a "Mediator" I would expect that any MTA could and *should* do no
more than preserve the header if it exists, as it does with all headers
that are not subject to canonical or generic rewriting or explicitly
modified by header_checks.
as it fixes a miss that
starts with DomainKeys, and goes on ever since, and reached the
mountaintop of madness with the advent of DMARC.
Which is also unsupported by Postfix, in that it demands a 3rd-party
add-on.
What sort of "support" would you expect to see in a MTA?
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo@toad.social and many *@billmail.scconsult.com
addresses)
Not Currently Available For Hire
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