On 2016-12-05, 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?
these ones:
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-how_exim_receives_and_delivers_mail.html
your proposal seems well-founded, but having big picture is always useful.
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-generic_options_for_routers.html
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_manualroute_router.html
how routers are controlled
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-string_expansions.html
how manipulate and test strings.
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-regular_expressions.html
pattern matching if you've not used PCRE before
spoiler alert
?
from your brief description it spounds like you want a manualroute router with
condition = ${if match{$h_subject:}{\N\[secure\]\N}}
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