I have set up ZCS with one domain. Our other domain is still being hosted on a separate non-Zimbra box. I want to begin the process of migrating the other domain over to the Zimbra box. However, as soon as I add the other domain name, mail to that domain will no longer be delivered to the other box. I have /etc/hosts with the ip of the other box for that domain. If I do a ping it does ping to the other box, but zimbra seemingly won't release the mail to the other domain. What am I missing?