I have zimbra server running everything for 6 domains, 1 domain has moved to its own office and wants their own email server .... so ... my question is ::

Setting up second zimbra server (running all zimbra services) but still using the LDAP master I have currently and the new server being a read-only replica.... moving all their mail to their own store, URL, of course DNS for that domain will have MX records for the new server .... anyone doing, done, gotchas in doing?