I'm doing some DNS work. I have discovered there are a lot of DNS zones in my cluster that have not been serviced for years. There are multiple servers with domains in use. All sorts of uses.. Hosted domains, add-on domains, zones belonging to resellers. What I would like to do, is make a list of all the zones that SHOULD be in the cluster. I will have to collect this list from each server so it is complete, then I should be able to remove any zones not in the list. Can anyone offer me a starting direction for collecting the domains?