Following last week’s post about Exchange 2007/2010 Public Folders Migration to O365 Scripts, Microsoft released recently another set of useful scripts: Microsoft Exchange 2013 Site Mailbox Directory Sync Support Scripts.
Site Mailbox Directory Sync Support Scripts enable synchronizing site mailbox objects from Office 365 cloud into on-premise Active Directory to support access for on-premise users.
Site Mailbox Directory Sync Support Scripts are used to support on-premise users accessing Office 365 site mailboxes. It pulls any changes to the site mailbox objects including property changes, permissions etc. from Office 365 and merges them into the on-premise Active Directory.