Migrate data from Exchange using GAMME

If you've set up your organization to use Google Apps, you can migrate users' mail, calendars and contacts from your Microsoft® Exchange environment to Google Apps using Google Apps Migration for Microsoft Exchange (GAMME).

1. Before you begin

  • System requirements: Check that you meet the system requirements for GAMME
  • User accounts: Create a list of user accounts that you are migrating. When migrating from an Exchange server, we recommend you use the same usernames in Google Apps as you do in your current mail server. This streamlines the process and allows you to create user lists with just one name or SMTP address per line. You don't need to enter your users' passwords in the CSV because authentication is through your Exchange server administrator account. 

    Learn more about creating a CSV file for GAMME to migrate user and calendar resources. 

2. Authorize GAMME for your domain

Before you can install GAMME, you must authorize the software for your domain. For details, see Authorize GAMME for your domain.

3. Configure GAMME

Step 1 of 3: Server details

  1. For Server Type, select Exchange.
  2. In the Hostname/IP Address field, enter your domain name or the IP address of the email server from which you want to migrate data. For example: smtp.mydomain.com or 198.102.434.8.
  3. In the Admin username field, enter the username for the Exchange administrator account you want to use to open your users' mail stores.
  4. Click Next.

Step 2 of 3: User and domain information

  1. In the Google Apps domain name field, enter the new primary Google Apps domain where the data will be migrated.
  2. In the Service account credentials file field, enter the path to your credentials JSON file that was created as part of the authorization process.
  3. In the Google Apps admin user field, enter the full email address of your Google Apps domain super administrator.
  4. Click Next.

Step 3 of 3: Data to migrate and migration settings

  1. Select the checkbox for each type of data you want to migrate: email, calendar, or contacts.
  2. Click Next.
  3. Review and optionally make changes to the settings:
    • Migrate all data: Only use this option if you are migrating an account again.
    • Save settings: When checked, the utility will retain the current configuration for future use.
    • Run Diagnostics: When checked, the utility will verify the configuration before running the migration.
    • Estimate: When checked, the utility will estimate the message count for the source users.
    • Migrate: When checked, the utility will perform the migration.
  4. Click Next.
  5. In the dialog box that appears, enter the username and password for the Exchange administrator account you are using to open your users' mail stores. Selecting Remember my password will bypass this step in future migrations.
  6. Click OK to begin the migration process.
To learn more about GAMME, see the GAMME Admin Guide, which includes detailed information about how the utility works, getting started, and running your migration.
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