Your company has an on-premise deployment of Microsoft Exchange Server 2003. Users access their mailboxes by using RPC over HTTP and Exchange ActiveSync. You purchase an Office 365 subscription…

Your company has an on-premise deployment of Microsoft Exchange Server 2003. Users access their mailboxes by using RPC over HTTP and Exchange ActiveSync. You purchase an Office 365 subscription. From the Office 365 Portal, you create and verify the accepted domain of the company. From the Exchange Control Panel, you attempt to migrate the mailboxes to Microsoft Microsoft 74-324 Exam Exchange Online. An error message indicates that the remote server is unavailable. You need to identify the problem. Which tool should you use?