We have a hybrid environment where user inboxes are on our on-premise exchange server and we use AD syncing up to Office 365.
We have always been able to change permissions as needed regardless of whether the users email existed in the O365 environment or not. Now when attempting to edit permissions, Sharepoint Online will through errors that no mailbox is setup as it attempts to connect to Outlook. We would like to continue using the hybrid solution while also editing the permissions and accounts which are synced up to O365. Anyone know how our end users can manage SharePoint online site permissions without having an mailbox in O365??
