If you're moving more than 150 mailboxes and the mailboxes contain large quantities of data, you may want to consider performing a staged migration if migrating from %BRAND_EXCHANGE_ONLINE_SHORT% Server 2007 or %BRAND_EXCHANGE_ONLINE_SHORT% Server 2003. If migrating from %BRAND_EXCHANGE_ONLINE_SHORT% Server 2013 or %BRAND_EXCHANGE_ONLINE_SHORT% Server 2010, using a hybrid deployment is an option. Both of these alternatives use directory synchronization to move mailboxes to %BRAND_OFFICE_365_SHORT%. After moving the mailboxes, you can turn off directory synchronization and manage the mailboxes exclusively in the %BRAND_OFFICE_365_SHORT% admin center.
If you're migrating email from %BRAND_EXCHANGE_ONLINE% Server, we recommend that you exclude public folders from the migration. ...
If you're migrating email from Mirapoint Message Server, use the format #user@domain#Admin_UserName#. Let's say you're migrating ...
If you're migrating email from the IMAP implementation for %BRAND_EXCHANGE_ONLINE_SHORT%, use the format Domain/Admin_UserName/User_UserName ...
If you're moving IMAP mailboxes from Gmail to %BRAND_OFFICE_365_SHORT%, you'll want to use the setup steps provided in our ...
If you're moving more than 150 mailboxes and the mailboxes contain large quantities of data, you may want to consider performing ...
If you're not done with your migrations, directing all users to %BRAND_OFFICE_365_SHORT% for their email is not really an ...
If you're not sure how to do this, ask a question in the %BRAND_OFFICE_365_SHORT% community. Include this error message so ...
If you're subscribed to %BRAND_OFFICE_365_SHORT% and have not activated your %BRAND_AZURE_ACTIVE_DIRECTORY% basic subscription, ...
If you're trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, ...