We are trying to migrate from Microsoft Exchange 2003 to Microsoft Exchange online. When going through cut-over migration plan, we get this error -
"We weren't able to connect to the remote server. Please verify that the migration endpoint settings are correct and your certificate is valid, and then try again. Consider using the Exchange Remote Connectivity Analyzer (https://testexchangeconnectivity.com
) to diagnose the connectivity issues."
When we are connect, we specify the exchange server and rpc proxy server. exchange server is set to our internal server name. RPC server is set to the mail.server.com. When we run the internal analyzer, we get all clear.
Any ideas on what the issue is? We verified the rpc authentication is set to basic, but are still having issues.
Help! Thanks all!