Need some help with this
We use exchange online with office 365 I need to verify that a particular user has fullaccess permission on every mailbox. I can see what mailboxes he has access to with this:
Get-MailBox | Get-MailboxPermission -User "firstname.lastname@example.org" | export-csv c:\temp\results.csv
What I need however is the opposite, I need to see what mailboxes he doesn't have access to.