Mail not being delivered between Office 365 and on-premise Exchange during cut-over migration.
I am doing an Office 365 cut-over migration from Exchange 2010. I moved a couple mailboxes and now user's whose mailboxes are still on Exchange 2010 cannot send to mailboxes that have been moved to Office 365.
I successfully ran the Office 365 hybrid configuration.
In office 365 I added connectors from "Your organization's email server" to Office 365 and from Office 365 to "Your organization's email server."
What do I need to do to get mail flowing between mailboxes still in Exchange 2010 and mailboxes that have been moved to Office 365?
If hybrid, the wizard should have created a send connector to Office 365 and you should see it under send connectors. Check queue viewer on EX2010 to see if the messages are being queued.