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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 ?

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Re: backup mail server

Maybe you can install Postfix manually and set 'relayhost' in it?