Exchange Online mailbox sender restrictions with Azure AD synced groups
I’d love to see current global stats comparing use of Exchange on-prem vs cloud. Surely given the number of recent security disasters, any notion of physical ownership of mailboxes equating to their safety has been well and truly dispelled and only the bravest or most prodigiously-resourced organisations would attempt hosting it themselves. Exchange Online is doubtless the most popular version and would most often be deployed alongside an on-prem Active Directory, yet as soon as AD is in the mix the assumption is that Exchange is on-prem or hybrid....