Does anyone know if it is possible to use MFCMAPI to restore the "Anonymous" and/or "Default" user permissions on say the "Inbox" for someone's account up on Office 365?
Unfortunately, the following cmdlet does not work in Office 365 since it cannot resolve "Anonymous" or "Default" to an actual user:
Add-MailboxFolderPermission -User 'email@example.com:\Inbox' -Identity 'Anonymous' -AccessRights 'None';
We've been told that unless we have an on-premises Exchange server in a hybrid configuration, it is not possible to repair a mailbox. Our only recourse up until now has been to back up the user's account, delete it and then restore from the back
Thanks for any insights!