The WinRM client cannot process the request because the server name cannot be resolved (4317502)

The following error is seen in the mailbox status on the statistics page.

1. Error : 'Connecting to remote server failed with the following error message : The WinRM client cannot process the request because the server name cannot be resolved.

Here are some things to check on the source server. 

First find the New-MoveRequest in the MAgE (Migration Agent for Exchange) log.  The line in the log is below.

Execute PowerShell: New-MoveRequest -Identity 3ab0a897-2521-459f-9143-d6c847a74b66 -BadItemLimit 221 -AcceptLargeDataLoss -SuspendWhenReadyToComplete -Remote  -RemoteHostName casserver.sourcedomain.local 

Once you found the server name here are some things to check.

That the Windows Remote Management Service is started.

1. Open up services.msc
2. Find the Windows Remote Management Service and start/restart

That Windows Remote Management is configured.

1. Open up a command prompt
2. Type in WINRM quickconfig