Exchange migration to Office 365 – minimum hybrid configuration

Migrating mailboxes

1. Return to the Office 365 interface and access Exchange administration.

Exchange admin

2. Go to the list of recipients.

recipient liste

3. Select Migration found in the menu above the list of boxes.

select migration

4. Select Migration to Exchange Online

5. Select: Remote Move Migration and click Next.

Migration a deplacement

6. Select the users to migrate and click Next.

select user to migrate

7. Detection of the MRS Proxy, if it is detected automatically go directly to point 11

Select proxy MRS

8. If the proxy is not detected automatically, type the following command in the Exchange powershell commands.

Get-WebServicesVirtualDirectory | FL

9. Note the external url (External Url)

get external url

10. Enter the URL without http (s): // and without ews / exchange.asmx

url of proxy mrs

11. Enter a name for the migration batch and set the errone element limit to 100 and a limit for large elements to 50

configuration of the migration batch

12. Select a recipient for batch notifications, select automatic batch start and manual completion.

13. The batch is being synchronized, you can track its progress and act on it (pause / stop).

migration en cour

14. The batch is synchronized :

15. Click Finish Synchronization. At the end of this step, the boxes will be hosted on Office 365.

16. Confirm your choice

17. The batch is finalized (exchange synchronizes new items).

18. The status should go to Finish.

19. You can check on your local Exchange that the boxes are properly disconnected. Users should also be changed to Remote Email User. You can check in the properties that the redirection alias is present. Do not delete the X500 address that is used for communication between the two organizations.

You’re done, all you have left uninstall your local Exchange.

Note: most of the captures in this article are from
Note┬▓: I applied this procedure personally for migrating a client to Office 365.