Please don't create a new thread on this topic while you have this thread open, I'll remove your duplicate post.
So you've done what, just disabled the imap proxy using the instructions I gave you in post #6? When are you seeing this error and you should post the error messages and any related log entries. You should also post the output of the following command:
Originally Posted by sahabcse
Did you disable the proxy on your original server before doing the migration?
zmprov gs `zmhostname` | grep zimbraServiceEnabled
zmprov gs `zmhostname` | grep zimbraServiceInstalled