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Recently, a customer asked me whether users can only be migrated on local ECP in Exchange mixed mode, and the answer is definitely no. Today, I will share with you another cloud-based migration method.

The steps are as follows:

The local Exchange2013 server wants to "enable the MRS proxy endpoint" and publishes port 443 to the public network

Two authentication methods should be selected in the screenshot

Visit the EWS external URL publishing address, enter the user name and password, and get the page shown in the following figure

If you need to reactivate MRSProxy. (only if the second part is abnormal, you need to run step 3.)

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Open Exchange Management Shell. Run the following command to shut down MRSProxy:

Get-WebServicesVirtualDirectory | Set-WebServicesVirtualDirectory-MRSProxyEnabled $false

After waiting a few minutes, run the command to enable MRSProxy:

Get-WebServicesVirtualDirectory | Set-WebServicesVirtualDirectory-MRSProxyEnabled $true

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You can see the local mailbox user402

Run the directory synchronization tool AAD connect

Start-ADSyncSyncCycle-PolicyType Initial performs a full synchronization

User402 has been synchronized to O365. Do not assign a license at this time.

You can see that user402 is a mail user in the contact.

Create a migration endpoint

Enter a local email address and the user name and password of the Exchange administrator

Start creating remote move batches

Only "synchronized" is displayed, indicating that the migration was successful. Click "finish Migration batch" at this time.

Get-MigrationBatch can view the status of the migration task; (from being synchronized to synchronized)

Until the display is complete, user402 changes from a mail user to a mailbox at O365

You can assign a license to user402; confirm that user402 mailbox data has been migrated successfully and that email is sending and receiving normally, and then you can delete the migration task.

Reference:

Http://guides.officeignite.com/Guides/Performing%20a%20Remote%20Move%20Migration.htm

Https://technet.microsoft.com/zh-CN/library/ms.exch.eac.LearnMoreMigrationConfiguration(EXCHG.150).aspx?v=15.1.492.20&l=1&s=BPOS_S_E15_0

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