Author: Karsten Behrens Date: To: exim-users Subject: [Exim] Re-Routing mail to certain MX
Dear all,
I'm running exim 4.22. Because of a problem with a certain protocol
(ECN) I cannot disable in my kernel, I cannot connect to a certain host
(let's call it [1.2.3.4]) which is MX for a lot of domains.
I would like to configure exim so that all mail going out to that host
is instead passed on to a different server (my.other.server). The
solution I found so far looks like this:
Problems occur when mail is going out to domains containing invalid MX
records. Let's say the dnslookup_catch router makes a successful lookup
for the primary MX (which is not 1.2.3.4) and runs into a timeout for a
secondary, invalid MX. The primary is discarded because of the
ignore_target_hosts statement, and the lookup for the secondary did not
complete, so the mail is queued but not passed on to the dnslookup
router as desired.
I hope you get my point ;-)
The question is: Is there an easier way to tell the smtp transport to
"replace" a certain IP address with a different one? Something like a
route_list entry in a manualroute router, but not domain-based, but
MX-based?
I'd be glad to provide more information if required.