SSH: Add correct host key

Question:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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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 the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
ca:16:09:c4:37:7b:31:3f:86:bf:9e:e4:5b:49:77:c2.
Please contact your system administrator.
Add correct host key in /export/users/txd087000/.ssh/known_hosts to get rid of this message.
Offending key in /export/users/txd087000/.ssh/known_hosts:15
Password authentication is disabled to avoid man-in-the-middle attacks.
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
Permission denied (publickey,password).

Solution:

remove the old record for your client machine from
$HOME/.ssh/known_hosts
in your server