Migration Manager for Exchange 8.15 - Target Exchange 2019 Environment preparation

Target Exchange 2019 Environment Preparation

Preparation Overview Checking System Requirements Setting Up Accounts and Required Permissions

Setting Up the Target Active Directory Synchronization Account Setting Up the Target Exchange Account

Changing the Default Exchange Account Granting Read Access to Active Directory Domain Granting Read Permission for Microsoft Exchange Container Granting Full Control on Mailbox Database Granting Membership in Local Administrators Group Granting Move Mailboxes Management Role Granting ApplicationImpersonation Management Role Granting Mail Recipients Management Role Granting Mail Enabled Public Folders Management Role Granting Full Control on Public Folder Administrator Mailbox

Setting Up the Target Active Directory Account

Changing the Default Target Active Directory Account Granting Read Access to Active Directory Domain Granting Read Permission for Microsoft Exchange Container Granting Write proxyAddresses Permission on Descendant PublicFolder Objects

Setting Up Target Agent Host Account

Changing the Default Target Agent Host Account Granting Membership in the Local Administrators Group Granting db_owner Role on SQL Server Granting SCP Create, Read and Write Permissions

Preparing the Target Exchange Environment for Exchange Migration

Backing Up Exchange Creating Custom Throttling Policies Configuring Transport Layer Security (TLS) Protocols Preparing Agent Host for Public Folder Synchronization Agents Creating Aelita EMW Recycle Bin Public Folder (Optional) Configuring Administrator Mailboxes for Public Folder Synchronization Preparing Public Folder Mailboxes for Public Folder Synchronization Creating Outlook Profiles for Public Folder Synchronization Fine-Tuning Public Folder Synchronization Agents to Use Kerberos Authentication (Optional)

Setting Up Connection with the Source Exchange Organization Using SMTP Connectors

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

Creating Send Connector Modifying Default Receive Connector Adding E-mail Domain Used for Redirection to the List of Accepted Domains

Configuring Target DNS Server for Mail Forwarding Testing the SMTP Connectors (Optional)

Configuring Administrator Mailboxes for Public Folder Synchronization

Public folder migration administrator mailboxes should be created on all Exchange 2019 servers involved in public folder synchronization. These mailboxes will be used to access the public folder tree when creating public folder synchronization jobs.

Caution: The administrator mailbox specified for the synchronization job should not be changed during the synchronization process.

The administrator mailboxes should not be included in mailbox or calendar synchronization jobs.

After you created public folder migration administrator mailboxes, take the following steps:

Ensure that the Exchange 2019 organization has primary hierarchy mailbox (which is the first created public folder mailbox in organization). If there are no public folder mailboxes yet, create one. It will automatically become primary hierarchy mailbox.
After that associate public folder migration administrator mailbox specified for the public folder synchronization with the primary hierarchy mailbox. To do this, run the following cmdlet in Exchange Management Shell:

Set-Mailbox –Identity <Public_Folder_Migration_Administrator_Mailboxes> -DefaultPublicFolderMailbox <Primary_Hierarchy_Mailbox>

Caution: The mailbox database and root public folder specified for the synchronization job should not be renamed during the synchronization process.

Preparing Public Folder Mailboxes for Public Folder Synchronization

Prepare public folder mailboxes for a successful public folder synchronization as follows:

Ensure that the size of public folder data to be migrated does not exceed the size limit for the primary hierarchy mailbox. If public folder content in the source organization is larger than the limit in the target organization, to migrate it you will need to perform specific steps including creation of additional secondary hierarchy mailboxes in your target Exchange 2019 organization. For detailed instructions, see Appendix B. Migrating Large Public Folders to Exchange 2013 or Higher of Migration Manager for Exchange User Guide.
TIP: For general information on public folders in Exchange 2019, see .
For each public folder mailbox consider adjusting the Recoverable Items quota according to the needs of your Exchange 2019 organization (by default, the limit is 30 GB per mailbox). If the quota limit is exceeded for a public folder mailbox, deletions of content in the source public folders will not be synced to that target public folder mailbox anymore.
To change the quota value for a public folder mailbox, invoke the following cmdlet:

Set-Mailbox -Identity PFMailbox –PublicFolder -RecoverableItemsQuota 50GB

Creating Outlook Profiles for Public Folder Synchronization

To synchronize public folders with Exchange 2019 organization, you need to create special Outlook profiles on the agent host associated with Exchange 2019 where you plan to install PFSA and PFTA.

For that, log on to agent host under the Agent Host Account, open Start | Control Panel | Mail (32-bit) and click Show Profiles. You must create two profiles: one named MMEX_PFSA and the other — MMEX_PFTA. To create each profile, take the following steps:

Click Add and then specify the profile name (either MMEX_PFSA or MMEX_PFTA, respectively). Click OK.
Specify the administrator mailbox you plan to use for public folder synchronization.
Click Next and wait until wizard connects to the mailbox. If prompted for credentials, specify Target Exchange Account credentials and select the Remember my credentials option.
Select the Change account settings option and click Next.
Clear the Use Cached Exchange Mode option.
Click Finish to complete the wizard.

To ensure that logon to created profiles through Outlook can be performed correctly, run Outlook 2013 and select the MMEX_PFSA (MMEX_PFTA) profile. If no error messages, credential prompts or any other message boxes that require user response appear, then profile is created properly and therefore can be used by PFSA and PFTA to perform public folder synchronization.

Note: Make sure that no issues related to certificate validation occur when you run Outlook. For instance, if you use self-signed certificates for Exchange 2019 Servers, you need to log on to each agent host under the Agent Host Account and add certificate from to the Trusted Root Certification Authorities and Trusted Publisher lists.

Fine-Tuning Public Folder Synchronization Agents to Use Kerberos Authentication (Optional)

During public folder synchronization, agents establish PowerShell session with source or target Exchange Server to process mail-enabled public folders. If only Kerberos authentication is available in the environment, then force each deployed PFSA or PFTA to use Kerberos authentication as follows:

Locate CONFIG.INI file of an agent.
Add the following line to the INI file and save the file:
PSForceUseKerberos=1
Restart the agent.

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Migration Manager for Exchange 8.15 - Target Exchange 2019 Environment preparation

Configuring Administrator Mailboxes for Public Folder Synchronization

Preparing Public Folder Mailboxes for Public Folder Synchronization

Creating Outlook Profiles for Public Folder Synchronization

Fine-Tuning Public Folder Synchronization Agents to Use Kerberos Authentication (Optional)

Fine-Tuning Public Folder Synchronization Agents to Use Kerberos Authentication (Optional)