1. I changed values in /etc/hosts and /etc/hostname manually. ISP in System-> Server -> Servername shows old name. Should it appeal to two config files mentioned earlier (essentially in both directions)? 2. System -> Server Config also shows old server name and deeper - in Server tab - in field Hostname I have old server name, IP Address field has 127.0.1.1 address, Nameservers field shows 220.127.116.11,18.104.22.168 but server has different nameserver. 3. System -> Server IP addresses has - in Server tab - old server name which is taken from selectable list, so it probably won't be able to change here. Is it possible to change it? Generally speaking in few places I have values which are not corresponding to settings of the server. How to fix it?