I see this question was asked before but several years ago.
We are having trouble with our current openfire server, Windows 2003 Openfire 3.7.1. We decided to build a new server on linux Openfire 3.9.3. I got everything set up and tested. We are ready to move to the new server. I need to change the server name on the new server to match the old one. The server name on the new server is set to the linux hostname.