Geert Hendrickx via Postfix-users:
> On Tue, Feb 04, 2025 at 17:09:52 -0500, Wietse Venema via Postfix-users wrote:
> > This reduces the Received: header from:
> >
> > Received: from <client name/address, SASL login, TLS details>
> > by servername (Postfix) with XXXX id yyy; server-date-stamp
> >
> > to:
> >
> > Received: by servername (Postfix) with XXXX id yyy; server-date-stamp
> >
>
> It seems that such reduced Received header would not be RFC5321 compliant,
> as the "from <client name>" clause is mandatory according to section 4.4.
This form is for non-SMTP mail, out of scope for RFC 5321. Postfix
has been using this since 1997 for submissions with /usr/bin/mail.
Wietse
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