Wave 15 Shared Mailboxes in a Hybrid Configuration

Notes from the Field

I have been working on a customer site for some time now and have recently been migrated to Wave 15 of Exchange Online.

It was brought to my attention during the week, that since the migration, Shared Mailboxes which were created via the Exchange Online EAC could not receive external email. Shared mailboxes which were created in the on-premise environment and then migrated to Exchange Online are working as expected.

Note: The support staff have already created the Shared mailboxes using the Exchange online EAC and these mailboxes already have significant amounts of mail contained within.[Keep reading] “Wave 15 Shared Mailboxes in a Hybrid Configuration”