On Sat, 25 Mar 2006, Andreas Metzler wrote:
> How does
>
> warn somecondition
> add_header X-added: foo
>
> work if the incoming mail already contained a X-added: header. Do I
> end up with two X-added: headers or is the old externally added
> header replaced with the new one?
You end up with two headers, just as you would do if you used the old
mechanism via the "message" modifier. There is no mechanism for deleting
header lines in ACLs. To do what you are implying, I would use
warn somecondition
set acl_m0 = foo
and then in your system filter
headers remove "X-added"
if "$acl_m0" is not "" then
headers add "X-added: $acl_m0"
endif
or something like that.
--
Philip Hazel University of Cambridge Computing Service
Get the Exim 4 book: http://www.uit.co.uk/exim-book
