I am running 4.5.6 on RHEL5, but for a number of reasons want to move Zimbra to another server.
The old server will remain and host our web site, DNS and other services.
I can see how to change the internal.zone file to point mail.domain.com to a new IP address, but how do I make sure that external incoming mail gets routed to the new server?
I'm sure others have done this but I can't find the keywords to search for.
Many thanks,