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Migration Manager for Exchange 8.15 - Source Exchange 2019 Environment Preparation

Source Exchange 2019 Environment Preparation
Preparation Overview Checking System Requirements Setting Up Accounts and Required Permissions Preparing the Source Exchange Environment for Exchange Migration Setting Up Connection with the Target Exchange Organization Using SMTP Connectors

Creating Custom Throttling Policies

To prevent possible issues in an Exchange 2019 organization, you should create custom throttling policies, apply them to the Exchange Accounts and then restart the Microsoft Exchange Throttling Service. To do this, run the following cmdlets in Exchange Management Shell for each Exchange Account:

New-ThrottlingPolicy <QMM_Exchange_Account_Throttling_Policy_Name>

Set-ThrottlingPolicy <QMM_Exchange_Account_Throttling_Policy_Name> -RCAMaxConcurrency Unlimited -EWSMaxConcurrency Unlimited -EWSMaxSubscriptions Unlimited -CPAMaxConcurrency Unlimited -EwsCutoffBalance Unlimited -EwsMaxBurst Unlimited -EwsRechargeRate Unlimited –PowerShellMaxConcurrency Unlimited

Set-ThrottlingPolicyAssociation -Identity <QMM_Exchange_Account_Name> -ThrottlingPolicy <QMM_Exchange_Account_Throttling_Policy_Name>

Restart-Service -Name MSExchangeThrottling

Setting Exchange Autodiscover URL (Optional)

Migration Agent for Exchange uses the Exchange Autodiscover service to query certain properties of mailboxes being migrated. In order to submit queries to the Autodiscover service, MAgE needs to know its URL. In most cases, the agent automatically gets the Autodiscover URLs for both the source and target organizations. However, you may experience situations when automatically discovering the URL fails or returns the incorrect URL.

When the correct URL cannot be obtained, an error will be generated causing the synchronization job to fail. Errors in the log file with the following exceptions indicate problems with obtaining the proper Autodiscover URL:

  • AutodiscoverLocalException: The Autodiscover service couldn't be located.
  • ServiceRequestException: The request failed. The remote server returned an error: (401) Unauthorized.
  • ServiceRemoteException: Invalid user: 'Joe.User@contoso.com'.
  • AutodiscoverDeploymentIdMismatchException: The User Deployment ID returned from Autodiscover does not match the expected value.

If you encounter any of the above exceptions, you need to manually configure the Autodiscover URL for the source or target organizations (or both) . The Autodiscover URL can be configured using the Set-MMExOrganizationProperties cmdlet from the MMExPowerShell module. Below is an example how to use the cmdlet:

Set-MMExOrganizationProperties -FQDN source.contoso.com -AutodiscoverUrl https://autodiscover.source.contoso.com/autodiscover/autodiscover.svc

TIP: For information how to use the MMExPowerShell.psm1 module, see Configuring Migration Project Settings Using PowerShell.

Setting Up Connection with the Target Exchange Organization Using SMTP Connectors

This section describes how to set up a connection with the target Exchange organization using SMTP connectors. On this step you may need to coordinate with the administrator of the target Exchange organization to set up the connection properly.

For more details, see the related topics:

Setting up Source Exchange Organization for Internet Mail Flow between Source and Target Exchange Organizations

You need to establish Internet mail flow between the source and the target Exchange organizations. For that, you need to create an Internet Send connector and Receive connector on an Exchange Mailbox server that can be directly reached through the Internet.

To establish mail flow to and from the Internet through a Mailbox server, follow these steps:

  1. Create a Send connector (to send email from source Exchange organization to the Internet) on the Mailbox server.
  2. Modify the default Receive connector for the source domain to accept anonymous e-mail from the Internet
  3. Add the e-mail domain used for redirection to the list of accepted domains.

Each step is explained in further detail in the related subtopics.

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