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    3. Office 365 Archive Mailbox to Exchange Guide

    Archive mailbox to Exchange migration

    Steps to migrate Office 365 Archive mailboxes to Live Exchange

User Manual

  • Office 365 Migration Overview
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    • Before Migration
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  • Videos
    • Office 365 to Office 365
    • Office 365 to Exchange
    • Office 365 to PST
    • Public Folder to Office 365
    • Archive Mailbox to Office 365
    • Public Folder to Exchange
    • Archive Mailbox to Exchange
  • Screenshots
    • Office 365 to Office 365
    • Office 365 to Exchange
    • Office 365 to PST
  • How it works?
    • Office 365 to Office 365
    • Office 365 to Exchange
    • Office 365 to PST
    • Public Folder to Office 365
    • Public Folder to Exchange
    • Public Folder to Shared Mailbox
    • Archive Mailbox to Office 365
    • Archive Mailbox to Exchange
    • Office 365 to Hosted Exchange
  • Connect to Office 365
    • Modern Authentication Using OAuth 2.0
      • Microsoft 365 modern authentication
      • Automatic Registration
      • Manual Registration
    • Connect with Global Admin
    • Connect to Office 365 with full access permission
    • Connect to Office 365 with CSV file option
    • Connect to Office 365 as single user mailbox
  • Connect to Exchange server
  • Set Office 365 Impersonation rights
    • Using PowerShell commands
    • Using Office 365 GUI
  • Set Exchange Server Impersonation rights
  • Map the Mailboxes
  • Migration Walkthrough
    • Office 365 tenant to tenant migration
    • Office 365 to Exchange migration
    • Office 365 to PST Export
  • Multifactor Authentication
    • Enable MFA in Office 365
    • Create App password for MFA
    • Disable Security Defaults

EdbMails software for O365 Archive mailbox migration

The archiving feature in Office 365 and Exchange enables you to move emails and mail data from the primary mailbox to the archive mailbox. An archive folder in your primary mailbox is not the same as an In-Place archive in Office 365. The archive folder, like any other folder such as Inbox, Sent, or Drafts, takes up the same amount of space in your primary mailbox. An In-Place Archive, also known as an Online Archive, stores and moves older messages from the primary mailbox to the archive, freeing up space on the primary. Before you can access the In-Place Archive in Office 365 and Exchange, you must manually enable it. Migration of archive mailboxes is required when moving from an older tenant to a new environment or when a business acquires another and merges the existing email environments.

EdbMails Office 365 migration tool can help you migrate Archive mailboxes to Live Exchange. It is a graphical interface application that displays the Archive mailbox data and enables you to transfer mail data, calendars, contacts, permissions, folders from the source to the target. Furthermore, it does not cause downtime or require technical expertise and maintains complete data and folder consistency. The following steps describe the Office 365 archive mailbox migration with EdbMails.

Archive mailbox to Live Exchange migration

QUICK LINKS

Public Folder to Office 365 Public Folder to Exchange migration Public Folder to Shared Mailbox Archive Mailbox to Office 365 Office 365 to Hosted Exchange Office 365 tenant to tenant migration

Planning a migration from Office 365 archive mailbox to Exchange

  1. Take a backup copy of all the archive mailbox contents before you perform the migration.
  2. Ensure that you enable the archive mailboxes and make them available in Office 365.
  3. Create and enable Archive mailboxes on the Exchange server
  4. Remember that In-Place Archiving is a premium feature and requires an Exchange Enterprise client access license (CAL).
  5. See more details on In-Place Archiving in Exchange server
  6. Determine whether you want to migrate the source Archive mailboxes to the target primary or Archive mailboxes.
  7. Determine whether you want to move everything at once or in stages.
  8. Check your internet connection speed and network configuration.
  9. Communicate the migration plan and the changes to your end users.
  10. Perform a test Office 365 migration before you start the actual one.

I. Pre Migration activities for Archive mailbox to Exchange migration

  • Step 1: Check that you meet the following requirements on Office 365
    1. Ensure that you meet the network and bandwidth requirements for the migration. See performance factors and best practices for Office 365 migration.
    2. Assign the Organization Management role group to the admin user on both the source and the target.
    3. Set the impersonation rights for the admin account in Office 365 to migrate mailboxes on behalf of other users in your organization. Verify if the source and target admin account in general has the following management roles assigned:

      1. ApplicationImpersonation
      2. View-Only Configuration
      3. View-Only Recipients
      4. Public Folders
      5. User management administrator/Global administrator
    4. Check if the Global admin account with the management roles has a valid and non-hidden mailbox on the source and target server.
  • Step 2: Check that your system meets the Exchange server setup requirements.

    The following links will help you to know about the network, hardware and operating system requirements for the Exchange server you want to install and migrate to.

    Note: Exchange 2010 has reached the end of support on October 13, 2020 and Exchange 2013 will reach the end of support on April 11, 2023. Therefore it is highly recommended that you migrate your mail data and Archive mailboxes to Exchange 2016 and 2019.

    1. Network and directory requirement for Exchange 2019
    2. Network and directory requirement for Exchange 2016
    3. Hardware Requirements for Exchange 2019
    4. Hardware Requirements for Exchange 2016
    5. Supported operating systems for Exchange 2019
    6. Supported operating systems for Exchange 2016
  • Step 3: Prepare your target system with the following prerequisites

    Complete the following prerequisites for Active Directory, Windows Mailbox server, and Windows Edge Transport servers before installing the Exchange server.

    1. Exchange 2019 prerequisites for preparing Active Directory (AD)
    2. Windows Server prerequisites for Exchange 2019
    3. Exchange 2016 prerequisites for preparing Active Directory (AD)
    4. Windows Server prerequisites for Exchange 2016
  • Step 4: Setup Exchange server for migration

    Given below is a list of key points for installing and preparing the Exchange server for migration. If you have already installed and set up your Exchange server, skip to point 4 in this step.

    1. Prepare AD and domains
      1. Before installing Exchange Server, you need to prepare your Active Directory forest and its domains for the new version of Exchange.
      2. If you have a separate team to manage the Active Directory schema, you need to first extend the active directory schema, else proceed to the next step to prepare the Active Directory.
      3. If you have multiple domains you need to additionally prepare the Active Directory domains.
    2. Install Exchange server on your computer

      Before installing the Exchange server, ensure that you meet the server system requirements and prerequisites as outlined previously. Next, follow the link to install Exchange 2016 or install Exchange 2019 from the setup wizard.

    3. Prepare a clean Exchange target environment
      1. Create and configure a Send connector to send mail outside the Exchange organization.
      2. By default, Exchange automatically creates receive connectors for inbound mail flow when the mailbox server is installed. If you need to configure receive connectors, follow the steps in the link.
      3. Add accepted domains to allow recipients to send and receive email from another domain.
      4. Configure the default email address policy to add the accepted domain to every recipient in the organization.
      5. Configure external URLs (domains) on the virtual directories in the Client Access (frontend) services on the Mailbox server to allow clients to connect to your server from the internet (outside the organization’s network).
      6. Configure internal URLs on the virtual directories in the Client Access (frontend) services on the Mailbox server to allow clients to connect to your server from the internal network.
      7. Configure SSL certificates from a third-party certificate authority for services such as Outlook Anywhere and Exchange ActiveSync.
      8. Verify the Exchange server installation by running the command Get-ExchangeServer on the Exchange Management Shell (EMS).
    4. Create mailboxes and Public folders on the Exchange server

      Before you migrate, ensure that you have mailboxes on the Exchange server and have assigned suitable licenses to them. Ensure that you also have the In-Place archiving enabled.

       See how to create mailboxes in Exchange server

       Steps to manage In-Place Archives on Exchange server

    5. Assign management roles to the admin account

      Set the following permissions to the admin account on the Exchange server.

      1. ApplicationImpersonation
      2. View-Only Recipients
      3. View-Only Configuration
    6. Verify the mailbox of the admin account

      Check to see if the admin account that has been assigned management roles has a valid and non-hidden mailbox on the Exchange server.

    7. Configure the throttling and message-size limits

      You can manually change the EWS throttling and message size limits on the target Exchange server by following the steps outlined in the links below.

      1. Change the EWS throttling settings on Exchange server
      2. Change message size limits on Exchange

    Note: For migrating Office 365 Archive mailbox to Exchange with EdbMails, you do not require PowerShell scripts. The following steps describe the archive mailbox migration method from the application’s graphical user interface (GUI).

II. Migrate Archive mailbox from Office 365 to Exchange

There are two methods for migrating Archive mailboxes with the EdbMails Office 365 migration tool.

  1. Direct migration of Office 365 Archive mailbox to Exchange
  2. Migrate to Exchange with the PST import method

Steps to migrate Archive mailbox to Exchange by using the direct method

  • Step 1: Download and install EdbMails Office 365 migration software
    • Download EdbMails and install the application on any computer that is connected to the source and target environment. You can also perform the migration operation by installing EdbMails on a non-Exchange server computer.

       See a detailed list of EdbMails system requirements for Office 365 migration.

      installation

    • Launch the application and click 'Login' or 'Start Your Free Trial'.

      Demo login EdbMails

    • Select the migration technique as Office 365 migration

      Select the option 'Office 365 Migration' (Tenant to Tenant migration & more...) from the drop down and click on Let’s Go!

      Office 365 Migration

    Note: If the Standard folders (such as Inbox, Calendar, Contacts) on your source Office 365 mailboxes are initialized with a different language, follow the details in the link to migrate these folders to the respective system folders on the target (destination) server.

    For Instance: If your source Inbox folder is named 'Boîte de réception', which is in French language and you migrate this folder directly to the destination server, then by default it will not be mapped to the 'Inbox' folder on the target server. In order to map the folder with the french name to the respective folder, change the regional settings on the target server to match that of your source mailbox folder language (in this case, it is French).

     Click here to know the steps to change the language and regional settings on Office 365

  • Step 2: Connect to the source Office 365 as Global Administrator

    In the Connect to Office 365 (Source) window, select the authentication method as Auto or Manual registration for modern authentication and the connection method as Archive mailbox (In-Place archive). Enter your global administrator credentials to authenticate.

     Connect to Office 365 server using secure modern authentication

    Automatic Registration

    Connection Methods

    After you authenticate and log in successfully, select one of the methods to load the mailboxes. You can also load and migrate the mailboxes using a CSV file.

    Note: If you want to migrate your Office 365 Archive mailbox to the target server in a Hybrid Exchange environment, see hybrid migration planning and strategy guide with EdbMails.

  • Step 3: Select the mailbox items and then connect to Exchange server
    1. EdbMails displays a list of Public folders from the source Office 365 tenant.
    2. Select the mailbox items and folders that you want to migrate.
    3. Click 'Migrate to Live Exchange' to setup the connection with the target server

    Export Selected Mailboxes

    Tip: If this is the first time you’re migrating with EdbMails, the migration is a full migration. On subsequent migrations from the same source to the target, the migration is incremental.

    EdbMails provides the following additional options to help you customize the migration task.

    1. Additional Include and Exclude Filter Options
    2. Filter emails by Date: Migrate to Office 365 by applying the Date filter
    3. Filter emails by Size: Exclude emails or attachments larger than a specified size.

    Include exclude folders

  • Step 4: Connect to Exchange server as Global Admin User

    In the Connect to Exchange server (Destination) window, select 'Connect using Global Admin User'. You can also connect to the mailboxes by loading a CSV file. See the instructions on how to use the different Exchange server connection methods supported by EdbMails.

    With EdbMails, you have the following migration choices:

    • Migrate the source Archive mailbox to the target Archive mailbox
    • Migrate the source Archive mailbox to target mailboxes
    • Migrate the source Archive mailbox to Shared mailboxes
    • Migrate Archive mailbox items to the target Public folder

    Connect to Exchange server as Global Admin User

  • Step 5: Map the mailboxes between the source and the target

    The mapping activity in EdbMails can automatically match and map the mailboxes and folders between the source and the target. This activity saves time when you’re migrating a large number of mailboxes.

    mailbox mapping

  • Step 6 : Start the Archive mailbox migration to Exchange

    Start and monitor the migration operation after you complete the mapping. Finally, verify the count of migrated emails, folders and mailbox items with EdbMails text-based log report.

Office 365 Archive mailbox migration by using PST import

If you have an exported PST file of the Archive mailbox, you can also use EdbMails to migrate them from PST to Exchange. The following steps outline the import operation.

  • Step 1: Select the migration method as Exchange migration

    Download and run EdbMails if you haven’t installed it on your system. On the EdbMails migration selection popup, select the migration technique as Exchange migration.

  • Step 2: Add PST files in bulk to migrate to Exchange

    To add the PST files, close the Connect to Exchange (Source) connection window and click 'Migrate PST to Exchange' at the bottom. Add the required PST files and click 'Continue'.

    Migrate PST to Live Exchange

    Add PST Files

  • Step 3: Connect to Exchange server as Global Admin User

    In the Connect to Exchange server (Destination) window, select 'Connect using Global Admin User'. You can also connect to the mailboxes by loading a CSV file. See the instructions on how to use the different Exchange server connection methods supported by EdbMails

    Connect to Exchange server

  • Step 4: Map and migrate Archive mailbox to Exchange

    The mapping activity in EdbMails can automatically match and map the mailboxes and folders from the PST file to Exchange. This activity saves time when you’re migrating a large number of folders. After you complete the migration, verify the count of the migrated items with the help of EdbMails log report. You can also log in to the Exchange server and verify the migrated folders and items.

    Migrate Source Exchange to Destination Exchange

III. Office 365 migration troubleshooting

 See Office 365 migration troubleshooting guide for possible solutions related to migration errors. For more information on EdbMails Office 365 migration, see frequently asked questions (FAQs)

Benefits of using EdbMails for Archive mailbox migration

EdbMails Office 365 migration tool automates the transfer of Archive mailboxes to Microsoft 365. Compared to the manual methods, EdbMails graphical user interface enables you to select and migrate folders, mailboxes and mail items easily without requiring PowerShell scripts.

  • EdbMails does not cause data loss or downtime during the Office 365 Archive mailbox migration.
  • Ideal solution for both small businesses and enterprise level users to migrate from Office 365 to Exchange
  • The application’s incremental migration feature ensures no duplicate items during subsequent migrations to the same target
  • EdbMails provides automated features such as mailbox/folder mapping, setting impersonation rights, which reduces the administrator’s manual efforts
  • It replicates the mailbox items and folders from the source to the target without affecting your data
  • EdbMails is highly secure and uses modern authentication with TLS encryption for Office 365 migration
  • Migrate Archive mailboxes of any size between Office 365 and Exchange.
  • Free 24x7 customer support facility with a free trial option to test the software’s working

 Related Links

  1. Videos - Office 365 Archive to Exchange migration
  2. Office 365 Public folder migration
  3. Office 365 Public folder to Shared mailbox migration
  4. Office 365 tenant to tenant migration
  5. Office 365 to Exchange migration
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