I had to change my server's domain and IP and now ISPConfig doesn't work very well. I would like to reconfigure it to work properly for the new domain / IP but as far as I see there isn't a "reconfigure" option. Is there a way to reinstall ISPConfig but keep my users and sites ? I tried /root/ispconfig/uninstall as suggested in other posts, but this information seems old and this file doesn't exist anymore. My question is what is the proper way of reconfiguring ISPConfig ?