Page History

Use the Microsoft 365 admin center to enable or disable SMTP AUTH on specific mailboxes

1. Open the Microsoft 365 admin center and go to Users > Active users. 
   
   Image Added
   
   
2. Select the user, and in the flyout that appears, click Mail.
3. In the Email apps section, click Manage email apps.
   Image Added
   
   
4. Verify the Authenticated SMTP setting: unchecked = disabled, checked = enabled.
   
   Image Added
   
   
5. When you're finished, click Save changes

1.

Image Removed

3. 

Image Removed

5.

Image Removed

^*Created using https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission