Topic: backup mail server
==== Required information ====
- iRedMail version: 0.8.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): mysql
- Linux/BSD distribution name and version: ubuntu 12.04
- Related log if you're reporting an issue:
I have primary mail server ( mx domain.tld 10), I need make secondary mail server (as backup) for mx domain.tld 20.
How I make secondary with relay mail to primary server ?