Good morning folks!
I have an interesting problem. I have one domain for 2 offices and due to several internet connection issues at the second office I installed a second server. The reason for this is if the internet drops out then the people internally in that office can still mail each other which is very important. The main office works the same way.
So I have 2 zimbra open source servers, 1 domain. What I would like to do is relay all mail through an external MTA reason being, I don't have email@example.com on the secondary server. But since the domain is the same it sends me an email back that it is undeliverable because the user does not exist, even though the user does exist... on another server.
Is there a way to relay both local and external mail through a smart host / ISP?
Any help would be appreciated.