Exchange 2010, 2013, Office 365–Auto Mapping Feature: Audit Full Access Mailbox permissions on your environment before migrating

Hi all,       long time no see ! As these days, many companies are migrating their E-mail infrastructures either to Exchange 2013 or Office 365, we often see the behavior that after being migrated, some users’ profiles got automatically loaded with all mailboxes for which these users had full access permissions in Outlook….