title: SSH error in connection to a new Domain
body: <p>I was already able to connect to the server via <code>ssh</code> properly. But recently after changing the server fixed-IP address and domain name, I cannot connect to the server by DNS name. Despite, I can <code>ssh</code> to the server with its IP address. The error of <code>ssh</code> with domain name is the following:</p>
  
  <pre><code>@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  @       WARNING: POSSIBLE DNS SPOOFING DETECTED!          @
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  The DSA host key for example.com has changed,
  and the key for the corresponding IP address X.X.X.X
  has a different value. This could either mean that
  DNS SPOOFING is happening or the IP address for the host
  and its host key have changed at the same time.
  Offending key for IP in /home/.ssh/known_hosts:10
    remove with: ssh-keygen -f "/home/.ssh/known_hosts" -R X.X.X.X
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
  Someone could be eavesdropping on you right now (man-in-the-middle attack)!
  It is also possible that a host key has just been changed.
  The fingerprint for the DSA key sent by the remote host is
  *:*:*:*:*:....
  Please contact your system administrator.
  Add correct host key in /home/.ssh/known_hosts to get rid of this message.
  Offending DSA key in /home/.ssh/known_hosts:11
    remove with: ssh-keygen -f "/home/.ssh/known_hosts" -R example.com
  DSA host key for example.com has changed and you have requested strict checking.
  Host key verification failed.
  </code></pre>