Re: [exim] header rewrite at ACL time

Jan Srzednicki wrote:
> Hello,
>
> I'm trying to set up Exim to add some headers during ACL checking (DATA
> ACL, if that makes any difference). I can easily add a custom header
> with add_header directive, but how can I remove any existing headers of
> this type? I want to make sure that a given header won't be forged in
> the message (only my server is "permitted" to set it).

If it's also you looking for your header, use :at_start: and be sure to
always add one.

If its for your users to see, do that but with an intermediate header-name,
and also add the real one in routing using the intermediate one
(which you then remove).

- Jeremy