Backup MX server on DNSONLY cpanel


Well-Known Member
Sep 2, 2004
Hello all!

I've found a few threads about running backup mx on another server, but most of them deal with having 2 full cpanel machines for the setup. What I'm needing to do is set up backup mx (e.g. store-and-forward) on a VPS that has the DNSONLY version of cpanel installed on it.

So far, I've managed to get the dns clustering set up, and exim configured to use /etc/remotedomains that is generated once per hour by a perl script reading in the domain list from /var/named, so that part is covered. What I'm now trying to figure out for the best method to use to get the server to store the mail, then forward it along to the main mail server once it's back in operation.

I'm not sure if this should be a simple remote_smtp entry in the routers section of exim.conf, or if I should be attempting to set up ETRN.

Suggestions/thoughts/flames? :D