To move Zimbra mailboxes to Office 365, you can follow these steps:
Export Zimbra Mailboxes: In the Zimbra server, use the Zimbra Administration Console or Zimbra Desktop client to export the desired mailboxes to the TGZ (Tarball Compressed Archive) format. This will create a TGZ file containing the mailbox data.
Set up Office 365 Account: Ensure that you have a valid Office 365 account with the necessary administrative privileges to perform the migration.
Use Migration Tools: Microsoft provides various migration tools and services to facilitate the migration from Zimbra to Office 365. One such tool is the "Microsoft 365 Migration" tool, which can be accessed through the Office 365 Admin Center.
Configure Migration Endpoint: In the Microsoft 365 Admin Center, configure a migration endpoint that corresponds to the Zimbra server. Provide the required details such as the Zimbra server address, credentials, and connection settings.
Create Migration Batch: Create a migration batch using the Microsoft 365 Migration tool. Specify the source as Zimbra and provide the necessary credentials for accessing the Zimbra server.
Start the Migration: Initiate the migration batch to start the transfer of Zimbra mailbox data to Office 365. The migration tool will establish a connection with the Zimbra server, extract the data from the TGZ files, and transfer it to the corresponding mailboxes in Office 365.
Monitor and Verify: Monitor the migration progress and verify the migrated data in Office 365. The time required for migration will depend on the size of the mailboxes and the network speed.
Complete the Migration: Once the migration is complete, ensure that all the mailbox data has been successfully transferred to Office 365. Perform thorough testing to ensure the integrity and accessibility of the migrated data.