Quoth Tim Bishop on Wed, May 31, 2000:
> 1. How does Exim know where the final delivery should be ?
local_domains
> Assuming it's a
> backup MX that simply relays the mail on to the main MX server. Am I correct
> in saying it will try and delivery to any other listed MX server with a
> higher priority than itself ?
Yes.
> 2. Can Exim be told to relay all mail it receives for the domain it's
> running as backup MX for to a specific host ? I believe this is done using a
> router, as you would for a smarthost, but just for the specific domain ?
Well, you can list the relay domains in a lookup file and write a
domainlist router such as:
to_relay:
driver = domainlist
domains = lsearch:/var/exim/relaydoms
route_list = "* host.to.relay bydns_a"
But why?
> 3. Say Exim was the only backup MX, and the main MX server was down for an
> extended period of time (say 24 hours). Will Exim queue the mail for that
> domain normally and thus generate the usual "mail has not been delivered for
> x hours" messages ?
Yes.
> Surely from an end-user point of view when an e-mail is
> delived to any MX server for a domain it's considered "received" ?
No. It's considered "passed on". Noone knows anything about
final delivery.
Vadik.
--
Yes, you can get an account if you promise not to wear ties
anymore.
-- Unknown sysadmin, 1998-10-27.
