I try to ssh to the server with ssh root@xxx.xx.xxx.xx
The reply I get is: "The authenticity of host 'XXX.XX.XXX.XX (XXX.XX.XXX.XX)' can't be established."
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (.ssh/known_hosts).
I can go futher.
What could be the problem?
Thanks