From: Ralf Hildebrandt (Ralf.Hildebrandtcharite.de)
Date: Mon Apr 02 2007 - 13:05:39 CDT

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* David Hoekman <dhoekmanhalcyon.com>:
> I need Postfix to relay mail generated by legacy software (i.e.
> inflexible & hard to change) which sends a 'Date' header that
> lacks timezone information, e.g. this:
> Date: Mon, 1 Apr 2007 09:15:00
>
> instead of this:
> Date: Mon, 1 Apr 2007 09:15:00 -0800 (PDT)
>
> The problem with this is that in the absence of a specific timezone,
> mail clients typically show this as having been sent from GMT,
> which can make the chronology of mail exchanges hard to follow.
>
> If no 'Date' header were present, I know that Postfix would add
> a correct one,

So You can remove it using header_checks:

/^Date:/ IGNORE

But BEWARE, this strips ALL Date: headers of ALL mails.

> but how can I rewrite an existing one?

Removing headers loses information (that may help in debugging,
filtering, etc.).

Rewrite it instead. use header_checks for that:

/^(Date:.*)$/ REPLACE X-$1

That would rewrite the Date:... header to an X-Date:... header.

--
Ralf Hildebrandt (Ralf.Hildebrandtcharite.de) plonkcharite.de
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
Applying computer technology is simply finding the right wrench to
pound in the correct screw.

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