How to use SMTP matching to match on-premises user accounts to Office 365 user accounts for Directory Synchronizationhttp://blogs.technet.com/b/hot/archive/2012/06/26/how-to-use-smtp-matching-to-match-on-premises-user-accounts-to-office-365-user-accounts-for-directory-synchronization.aspxSummary In some scenarios, you may have to transfer the source of authority for a user account when that account is originally authored by using Office 365 management tools. These tools include the Office 365 portal, Microsoft Online Services Moduleen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)