On 2023-12-18 at 17:15:16 UTC-0500 (Mon, 18 Dec 2023 23:15:16 +0100)
Steffen Nurpmeso via Postfix-users <[email protected]>
is rumored to have said:
Bill Cole via Postfix-users wrote in
<[email protected]>:
|On 2023-12-17 at 09:27:36 UTC-0500 (Sun, 17 Dec 2023 06:27:36 -0800
|(PST))
|saunders.nicholas--- via Postfix-users <[email protected]>
|is rumored to have said:
|
|> How is this header populated?
|>
|> X-Google-Original-From: [email protected]
|
|By Google. Exactly what their algorithm is for it is not known. The
"X-"
|prefix is the clue: it's an experimental or local-use header.
Note that the X- prefix is deprecated by RFC 6648 from 2012:
Deprecating the "X-" Prefix and Similar Constructs in Application
Protocols
Yes, but that does not mean that one can expect to find a sound
specification for what a random X-* header means and despite the
deprecation you can actually be fairly sure that any X-* header has no
reliable public spec.
--
Bill Cole
[email protected] or [email protected]
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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