I need change the name of domain from test1.com to test2.com. Before i´d have two customers at this server, client1 and client2. When i install the server and ispconfig I put test1.com (from client1) like master domain and name server, but now this customer as gone (and client2 dont like firstname.lastname@example.org messages for example), i need to change all configs to test2.com, but whithout reinstall or stop the server (it have various online shops). How can i change this and modify the ispconfig without reinstall ? Sorry for my bad bad english.