Zimbra to G Suite Migration Guide
- This is the complete onboarding task flow for migrating mailboxes from Zimbra to G Suite.
Prepare the Source Environment
- Export list of users to a CSV file. This will be used when adding users to your MigrationWiz mailbox project. KB005011
- Inform users to split up folders with a very large number of items.
· Zimbra will exhibit poor migration performance for folders with a large number of items.
· Calendar folders can be slower to migrate when the data is complex, e.g., recurring calendar meetings result in a much higher number of calendar events.
- Ensure that you have admin credentials available for use during migration.
- Use existing credentials
- Create a new admin account for migration. This will create an additional admin account with the password of 'test123':
zmprov ca firstname.lastname@example.org test123 zimbraIsAdminAccount TRUE
- Transform a normal existing user account into an admin account (in this example future-admin will become an admin):
zmprov ma email@example.com zimbraIsAdminAccount TRUE
- Test mailbox access. KB004332
- Make sure the neccessary ports to connect to the Zimbra server are open. Access to SOAP web services is needed for migration. This is via both regular and admin user mode. Ports 80, 443, and 7071 are the common ports. KB004139
Prepare the Destination Environment
- Create users on G Suite. Refer to the G Suite admin help article here.
- Grant MigrationWiz OAuth 2.0 access to G Suite. KB005019
- If migrating to multiple domains, repeat these steps for each domain.
- G Suite as the Destination (full scopes):
https://mail.google.com/, https://www.google.com/m8/feeds, https://www.googleapis.com/auth/contacts, https://www.googleapis.com/auth/calendar, https://www.googleapis.com/auth/admin.directory.group, https://www.googleapis.com/auth/admin.directory.user, https://www.googleapis.com/auth/drive, https://sites.google.com/feeds/
- Create the customer. KB005421
- Create the Source and Destination endpoints. KB005427
- For the Source endpoint:
- Click on EndPoints > Add Endpoint > Enter endpoint name > For endpoint type select Zimbra 6.5+.
- Enter Zimbra server URL KB004331
- Click on the Provide Credentials radio button, and enter the admin account credentials. These are either your existing admin credentials, or the credentials for the account that was created under the Prepare Source Environment section.
- For the Destination endpoint:
- Click on EndPoints > Add Endpoint > Enter endpoint name > For endpoint type select G Suite/Gmail.
- It is necessary to add ALL domains that will be migrated to. This means that if there are users in one project with domain names Sourcedomain.com and Destinationdomain.com, then it is important to ensure that both of these are added under Your Domains when creating the endpoints. When you add a domain, you need to click on the "+" button.
- Enter Administrative email address. Note: This is the account that has admin access level to the Google admin portal.
- Purchase licenses. From your MSPComplete dashboard, click on Purchase > Mailbox Migration > select MigrationWiz-Mailbox and enter the number of licenses you wish to purchase. Note: Check to see if there are any available bundles for discounts (e.g., MigrationWiz-Mailbox and DeploymentPro Bundle). KB004647
- Deploy DMA to users. Once DMA has been deployed to users, check the Users tab in MSPComplete. This will be populated with the user accounts that have DMA installed. DMA can be deployed by these options:
- Via Group Policy Object (GPO). Note: This is the recommended methodology, because no end user interaction is required. KB005412 video
- Via email. KB005411
Watch this video to see a walk-through of the steps below.
- Create the Mailbox Migration project. KB004380
Add the accounts (also referred to as "items") that will be migrated to the project. KB004842
Set the Project Advanced Options. KB004834
- Create the Mailbox Migration project > Select the customer > Select the Source endpoint > Select the Destination endpoint.
Run Verify Credentials. KB004511
Notify users that a migration is occurring. Send email to all users telling them the time and date of the migration.
Pre-Stage pass: Select the users > Click on 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 on Start Migration. KB004938
MX Record Cutover. Change over MX records on the DNS provider's portal. Also include the AutoDiscover (CName) setting.
- The following options are most valuable for this migration scenario:
- Set Maximum concurrent migrations. We recommend setting this to a very low value, such as 5, to ensure that server utilization does not go above 80%. If the Source Zimbra server is running low on resources, it can result in email being migrated as blank. If the Source server has enough server resources, set this parameter based on the bandwidth guideline of three (3) mailboxes per 1Mbps of bandwidth. Therefore, for example, if there is a 10Mbps connection, we recommend setting the maximum concurrent migrations parameter to be 30. If the Source server has very few available server resources (e.g., it is running low on memory or it has very high CPU utilization), we recommend setting this value to a lower number to avoid overwhelming the Source server with requests.
- Under Support/Support options, add: ZimbraCalendarExpandInstances=1 KB005122
Send email to end users to let them know what to expect for the Outlook profile reconfiguration. If using DeploymentPro, refer to KB005799 for some sample text and screen shots that can be included in this email.
Full (Delta) pass: Select the users > Click on the Start button from the top, select Full Migration > Click on Start Migration. KB004938
Run Retry Errors. KB004658
Look through the user list and click on any red "failed migration" errors. Review information and act accordingly.
If problems persist, contact Support. KB004529
If users will be using Microsoft Outlook with G Suite, they will need to follow instructions here, to download and install G Suite Sync for Outlook and create a new Outlook profile that connects to G Suite.
Click on the pie chart icon in the MigrationWiz dashboard to receive an email containing all the project migration statistics. KB004626
- 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: