Re: [exim] add_header question

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Autor: Graeme Fowler
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A: exim-users
Assumpte: Re: [exim] add_header question
On Fri, 2008-06-06 at 12:46 +0100, Chris Edwards wrote:
> What _doesn't_ work is writing a header in the DATA acl itself, prior to
> the call to SA. The doesn't seem to be seen by SA.


This is expected behaviour, as documented here:

http://www.exim.org/exim-html-current/doc/html/spec_html/ch40.html#SECTaddheadacl

"The add_header modifier is permitted in the MAIL, RCPT, PREDATA, DATA,
MIME, and non-SMTP ACLs (in other words, those that are concerned with
receiving a message). The message must ultimately be accepted for
add_header to have any significant effect."

and

"Header lines are not visible in string expansions until they are added
to the message. It follows that header lines defined in the MAIL, RCPT,
and predata ACLs are not visible until the DATA ACL and MIME ACLs are
run. Similarly, header lines that are added by the DATA or MIME ACLs are
not visible in those ACLs. Because of this restriction, you cannot use
header lines as a way of passing data between (for example) the MAIL and
RCPT ACLs."

...being the most relevant parts for Chris. And probably for Marc, too.

Graeme