Configuring Mailbox for User Authentication

1. Open Microsoft 365 admin center.
2. Select Users > Active users.
3. Select Add a user.
4. Enter user details.
5. Copy the user name value. It will be used to add email address to the queue.
   Note: Full email address of the user will be used as a queue address.
6. Select Next.
7. Click Next and Finish.

Go to System Configurator to configure system-level email settings and an email queue.