We have a zimbra server running for our domain, now the mailboxes belonging to the domain have grown rapidly and is expected to grow in the same way. We are thinking to add another server to support more users. Now how to setup two mail servers and have zimbra running on both. Also, what would my dns entry look like then incase of 2 mail servers? I don't want to change the domain name for my users.

Awaiting for your help and kind suggestions.

Thanks !

Best Regards,