Go to theExchange admin center(EAC).
In EAC, chooseMail flow, and thenAccepted Domains.
Double-click the domain you want to modify, in this example, cohowinery.com.
In the window that opens, selectInternal Relay.
ChooseSave. This setting may require a few minutes to take effect.
Article ID: 4026750 - Last Review: 2017, ഓഗ 1 - Revision: 1