Are you really sure you need to do matching based on subject?
If you could construct either the 'from' or 'to' addresses at submission time this would be much easier... (and scalable)
--
Merlin Hartley
> On 5 Dec 2016, at 19:04, Joseph Kezar <joseph.kezar@???> wrote:
>
> I have inherited an Exim 4.x mail relay server that relays our
> organization's internal mail from application servers. We now have a
> need to write a router in Exim's config that behaves like this:
> IF incoming mail is from a specific IP or subnet AND mail has
> '[secure]' in the subject line THEN mail needs to be routed to another
> specific mail exchanger.
>
> What sections do I need to familiarize myself with in the Exim Specification?
>
> Thank you very much,
> Joseph Kezar
>
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