Forum Discussion
Access to Shared Mailbox for non trusted domain users?
Scenario: Office365 Tenant: abc.com Users able to access shared mailbox residing on trusted client domain: xyz (using Exchange 2016) Recently, XYZ has moved all mailboxes (user mailbox and shared mai...
Hi Adam,
Thanks for the clarity.
So Office365 Tenants cannot be federated to the external domain, even though they are federated with the on-premise Active Directory and they are using Azure AD?
Hey Admin O365,
In short yes.
If you have the organizational relationship setup, with all the needed connectors etc, then you can do the permissions as you are talking (to the one exchange system you own that your AD is linked too, etc).
But just an external domain, that is not in a hybrid setup with your O365 tenant, cannot do the permissions.
Adam