Your company has a Microsoft Exchange Server 2003
organization. Users access their mailbox 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 all of the mailboxes to Microsoft Exchange
Online and you receive an error message indicating that the remote server is
unavailable. You need to identify what prevents the mailboxes from migrating.
Which tool should you use?
A. the Microsoft Remote Connectivity Analyzer
Exchange Server Deployment Assistant
C. the Office 365 Deployment
D. the Microsoft Online Services Directory Synchronization