Manage the Migration to Exchange Online - Page 3
If your email server supports migration through POP/IMAP (Microsoft Exchange Server):
- Log a Support Request to Microsoft Online Support to enable POP/IMAP.
- Use Microsoft Transporter Tools to download the emails from Microsoft Exchange Online to your on-premises Microsoft Exchange Server. You can download Microsoft Transporter Tools from here.
If your email server supports migration through POP/IMAP (non-Microsoft Exchange Server):
- Log a Support Request to Microsoft Online Support to enable POP/IMAP.
- Download the emails from Microsoft Exchange Online to your new email server, using your new email server's migration tools.
If your email server doesn't support migration through POP/IMAP:
- Archive the emails using Microsoft Office Outlook, just archive the data to a PST file. Note that you will need to do this on each individual email client.
- Re-configure email clients to connect to the new email server. Email clients will be connecting to an empty mailbox.
- Always plan to migrate back to a supported mail server.
Conclusion
Emails are a mission-critical application, so careful planning is needed. When it comes to migrations for Microsoft Exchange Online, remember: Directory Sync, Microsoft Online Migration Tool, and MX Record modifications.



