We have an Exchange 2003 and we plan to migrate users to Office 365 cloud.
If I setup my domain on Office 365 (ie. add records to my DNS), does it mean all my mails will route to Office 365 and my users can't receive the email on my Exchange 2003 ? Does it mean user can't send / receive email unless they configure their account to cloud ?
What's the best way to migrate Exchange 2003 to cloud in my stituation ?
We have a blackbbery but we don't want to keep it. Any option to handle those BB users after moving to cloud.
Any solution to backup the users mailbox in cloud back to local storage ?