Well DNS and the setup is fine. It's been a running installation for a year or more, and it's still working. It's just the ZAD integration that's causing the problem. We are trying to get ZAD running on another box, and have tried to connect the boxes together using LDAP, and that seems to fail miserably.
We have shut down the ZAD box, and disconnected any remnants of the other server in our main Zimbra server. I'll get the responses posted about the DNS questions, but I am pretty sure it's not DNS.
