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MIGRATE EXCHANGE SERVER TO TO MICROSOFT 365 – OFFICE 365
Microsoft 365 and Office 365 support several methods for migrating email, calendar, or contact data from your existing messaging environment into Microsoft 365, Office 365, or both, as described in How to migrate multiple email accounts to Microsoft 365 or Office 365.
MIGRATE MAILBOXES FROM THE EXCHANGE SERVER
EXCHANGE SERVER TO MIROSOFT365 MIGRATION TOOL
Administrators can migrate email, calendar and contacts from user mailboxes into Microsoft 365 or Office 365 to facilitate migrations from an on-premises Exchange Server environment.
THREE TYPES CAN BE MADE FROM AN EXCHANGE SERVER - EXCHANGE SERVER TO OFFICE 365 MIGRATION – HOW TO MIGRATE OUTLOOK TO MICROSOFT
MIGRATE ALL MAILBOXES ONCE (CUTOVER MIGRATION OR EXPRESS MIGRATION).
This type of migration is recommended if you run Exchange 2003, Exchange 2007, Exchange 2010 or Exchange 2013. It also works if there are less than 2000 mailboxes. A cutover migration can be done by starting at the Exchange Admin Center (EAC).
Important Note: While you can move up 2000 mailboxes with cutover migration, due to the time required to create and migrate 2000 users, it is cheaper to migrate 150 users.
MIGRATE MAILBOXES IN BATES (STAGED MIGRATION).
This type of migration is recommended if your Exchange 2003 or 2007 has more than 2,000 mailboxes. Staged migration is an overview.
MIGRATE USING A MICROSOFT365 OR OFFICE365 ENVIRONMENT AND AN INTEGRATED EXCHANGE SERVER (HYBRID).
This type of migration can keep both online and on-premise mailboxes in your organization and migrate users and emails to Microsoft 365 and Office 365. This type of migration is recommended if:
Exchange 2010 is installed. There are more than 150-2,000 mailboxes.
You are using Exchange 2010 and wish to move mailboxes in small batches.
You can exchange 2013.
MOVE PST FILES - USE THE IMPORT SERVICES
You can use the Import Service to move large PST files to Microsoft 365 and Office 365 if you have a lot of them.
The Import Service allows you to upload PST files to a network or send them to a drive you have prepared.
MIGRATE EMAIL FROM ANOTHER IMAP-ENABLED EMAIL SYSTEM
To migrate user email from Gmail and Exchange to Outlook.com or other email systems that allow IMAP migration, you can use the Internet Message Access Protocol. Only the items within the user's inbox and other mail folders will be migrated when you use an IMAP migration to migrate their email. IMAP cannot migrate tasks, contacts, and calendar items. However, they can be done by users.
IMAP migration doesn't allow you to create mailboxes in Microsoft 365 and Office 365. Before you can migrate an individual user's email, you must create a mailbox.
HOW DOES IMAP MIGRATION WORK
Here are the main steps for IMAP email migration.
HIRE USERS TO IMPORT EMAIL
You can upload your email, contacts and other information to Microsoft 365/Office 365
## MIGRATION LIMITATIONS ##
Based on your transport configuration, the maximum size of an email message that can easily be migrated is 35 MB. The default limit for a single email message is 35MB, but you can increase it to 150MB.
Limitations on throughput for calendars and contacts are entirely dependent on the quota restrictions on the Google G Suite side for your tenant's service accounts.
The following table lists additional migration restrictions:
Type of data limitations
Mail Vacation settings, automatic reply settings, and filters/rules will not be migrated.
Meeting rooms No room bookings can be moved.
Calendar Cloud attachments shared calendars, Google Hangout links, and event colors cannot be migrated.
Contacts Maximum of three email addresses per contact can be migrated.
Contacts Contact URLs and Gmail tags cannot be migrated.
Related blogs:
Migrate Exchange 2010 to Office 365 |
Migrate Exchange 2013 to Office 365 |
Migrate Exchange 2016 to Office 365 |
Migrate Exchange 2019 to Office 365
Office 365 Migration Steps |
Migrate Public folders to Office 365 |
Migrate distribution list to Office 365
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