Backup Mailserver

[Tripple]

Whenever my Zimbra mailserver goes down I have a backup mailserver in a datacenter where I entered a line in Postifx main.cf:
relay_domains = $mydestination, myzimbra.com

All mail will stay there untill the Zimbra server is back online.

Can I fix this the other way around? Can Zimbra act as backup mailserver?
My guess is this will work but I have to add this line after every upgrade.

[phoenix]

Originally Posted by Tripple

Can I fix this the other way around? Can Zimbra act as backup mailserver?

Yes, it can as Zimbra uses postfix as the MTA.

Originally Posted by Tripple

My guess is this will work but I have to add this line after every upgrade.

Yes, that's correct.