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Hi
I am researching a cutover migration from exchange on premise to exchange online. I am trying to understand what happens after the migration batch has completed and the MX records updated to point to Exchange Online. Do the users need to have their mailboxes setup again in Outlook or will their existing mailbox seamlessly link to the Exchange Online mailbox?
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Hi @ Ian， Yes. In the official documentation, as well as other guidance documentation, it is stated that creating Autodiscover records enables users to easily connect to their new Microsoft 365 or Office 365 mailbox using Outlook and mobile clients. However, we still recommend that after completing the migration, please try to recreate the profile.
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Thank you. I am most interested to know if the mail will have to resync to the existing user profile in Outlook? (I understand mail will need to resync if we have to recreate the profile for the user)
Be sure to set the autodiscover record to Exchange Online so any client can find the new mailbox location:
However, there is no guarantee this will work seamlessly for all clients. Some may need to create new profiles to connect to the new mailbox
Thank you. Will make provision for the possibility of having to resync the users mail in Outlook.
Hi @ Ian，
I revisited the official documentation, which states that users must recreate outlook profiles to connect to M365 after completing the cutover migration.
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Hi @ Ian，
Just checking in to see how things are going on with this thread.
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