Office 365 to Amazon WorkMail Migration Guide

Introduction

This is the complete onboarding task flow for migrating mailboxes from Office 365 to Amazon WorkMail.

Complete each step in the order listed. Links to corresponding Knowledge Base articles are provided.

To see what items are included in the migration, see What items are migrated with MigrationWiz? and What items are not migrated with MigrationWiz?

MigrationWiz is a migration solution (not a synchronization solution) and will NOT propagate updates, deletes, or moves of the items previously migrated in the first migration pass because we do not have “live” monitoring of changes (as with a sync agent) and we cannot handle scenarios such as conflict resolution without user interaction.

MigrationWiz supports the capability to share migration projects across a Workgroup. When the Project Sharing feature is turned on, all Agents besides those who are Inactive can view all migrations projects. For more information, visit Project Sharing in MigrationWiz.

Prepare the Source Environment

1. Create an administrator account in Office 365 to be used for migration, or use the global admin account for the tenant. KB004948
2. Export user list to a CSV file. This can be used when bulk-adding users to your MigrationWiz project later. You can copy and paste the user list into the Source Email column in your MigrationWiz project dashboard under Add > Bulk Add. Steps: From Office 365 admin portal > Users > Active Users > Export > Continue.

Prepare the Destination Environment

Full details can be found in the Amazon WorkMail admin guide here

1. Add an Organization to Amazon WorkMail. For more information, see Add an Organization.
2. Add your domain to Amazon WorkMail. For more information, see Add a Domain.
3. Create new users, or enable your existing directory of users, for Amazon WorkMail. For more information, see Create New Users.
4. Create an admin account for migration that has full access permissions to all mailboxes. Add the new user migration_admin in the Amazon WorkMail console, or create the user migration_admin in your Active Directory, and enable this user for Amazon WorkMail. For more information, see Migrate to Amazon WorkMail.
   
   Note: When you are setting the Destination endpoint, the administrative login name must be entered in the form of an email address.

MSPComplete Steps

1. Create the customer. KB005421
2. Create the Source and Destination endpoints. KB005427
   • Click Endpoints > Add Endpoint > Enter endpoint name > For endpoint type, select Office 365.
   • Click the Provide Credentials radio button, and enter the admin account credentials.
     
     Note: This should be a global admin account. If creating a separate admin account for the purpose of migration, refer to the Office 365 section in KB004725.
   • Click Endpoints > Add Endpoint > Enter endpoint name > For endpoint type, select AWS WorkMail.
   • Click the Provide Credentials radio button, and enter the admin account credentials for the account that was set up under the "Prepare the Destination Environment" section of this guide.
   • From the drop-down list, select the WorkMail Region.
• For the Source endpoint:
• For the Destination endpoint:
3. Purchase licenses. We recommend that you purchase the User Migration Bundle license for this migration scenario. User Migration Bundle licenses allow you to perform multiple migrations of User mailboxes, documents, and personal archives, plus Google coexistence configuration, and allows the use of DeploymentPro to perform post-migration Outlook email profile configuration. Refer to these articles for more information:
   • How do I purchase licenses?
   • Apply User Migration Bundle licenses to the Customer's Users
   • Which migration license should I choose?

MigrationWiz Steps

1. Create the Mailbox Migration project. Read the How do I create a new migration project? article for more information.
2. Add the accounts (also referred to as "items") that will be migrated to the project. KB004842
3. Set the Project Advanced Options. KB004834
   • Set to use impersonation at the Source. Checkmark the Use impersonation at Source box. KB004727
   • If this is a large migration project, the value for Maximum concurrent migrations​, under the Performance section, can be set to a very high value, e.g., 250.
     
     Note: There is no limit for this value (for cloud to cloud migrations), if using impersonation.​
• The following options are the most valuable for this migration scenario:
4. Run Verify Credentials. KB004511
5. Notify users that a migration is occurring. Send email to all users, telling them the time and date of the migration.
6. Pre-Stage pass: Select the users > Click the Start button from the top, and select Pre-Stage Migration > Under the Migration Scheduling section, from the drop-down list, select 90 days ago > Click Start Migration. KB004938
7. MX Record Cutover. Change over MX records on the DNS provider's portal. Also include the AutoDiscover (CName) setting. For more information, see Use AutoDiscover to Configure Endpoints.
   • Set up mail forwarding. KB004315
1. Note: If you are migrating in batches and mail coexistence is required, you will not be cutting over the MX records until your final batch of users has been migrated, and you must perform this extra step:
8. Send email to end users to let them know what to expect for their Outlook profile reconfiguration. If using DeploymentPro, refer to KB005799 for some sample text and screen shots that can be included in this email.
9. Full (Delta) pass: Select the users > Click the Start button from the top, select Full Migration > Click Start Migration. KB004938
10. Run Retry Errors. KB004658
11. Look through the user list and click any red "failed migration" errors. Review information and act accordingly.
12. If problems persist, contact Support. KB004529
13. Reconfigure Outlook profiles to use Amazon WorkMail. For more information, see Connect Microsoft Outlook to Your Amazon WorkMail Account.
    
    Note: Users must create new Outlook profiles, and set up their signatures again, and reattach any PST files that were attached to their previous profile.
14. Set up Amazon WorkMail on your Kindle, Android, iPad, iPhone, or Windows Phone. For more information, see Connect Your iOS Device and Connect Your Android Device.
15. Click the pie chart icon in the MigrationWiz dashboard to receive an email containing all the project migration statistics. KB004626