I am in the process of setting up a zimbra server for a few users.

I want to do testing on a domain we are not using and want to know how you change the domain in zimbra (during installation I set it up with the domain I will be using later). I changed the hostname and updated the hosts file with the new info but can't figure out how to change zimbra with the new domain. (I can't log into the web gui because I can start the services after changing host/domain name).

Also does anyone have and info on setting up DNS with zimbra. I have a windows server 2008 with DNS but that is for a different domain, I guess I can add the domain(s) I will be using but it might be better to use bind9 on the same server as zimbra. Any thoughts?