Setup via PowerShell

1. Go to Configuration > Office 365.
2. Select your Office 365 tenant.
3. Click Show Exchange configuration.
4. Click Copy configuration commands to the clipboard.
5. Click Close.
6. Execute the script.

This PowerShell script creates an inbound partner connector that is assigned a wildcard by default and applies to all inbound emails.

NOTE: Some email servers still have the old MX record in their cache for up to 24 hours. We therefore recommend initially deactivating the restriction to the applicant name in your Exchange Admin Centre under Mail Flow > Connectors and activating it after 24 hours at the earliest. Otherwise it is possible that emails will be rejected by Exchange.