Action: Add mail enabled users to Exchange Online Before data migration to Office 365, G Suite mailboxes first need to be ...

Action: Add mail enabled users to Exchange Online  Before data migration to Office 365, G Suite mailboxes first need to be represented as mail-enabled users (contacts) in Exchange Online to support co-existence mail flow. When you enable directory synchronization, you can also mail-enable an Active Directory user account by running the Windows PowerShell cmdlet enable-mailuser on the on-premises Exchange Server. After the next directory synchronization completes, confirm the object appears as a contact in Exchange Online. When ready to begin data migration, assign each user an Exchange Online license and set the auto-forwarding on the Office 365 mailbox to point to the MX record routing domain (for example, pilot.contoso.com) which should point to G Suite. The FastTrack team can then begin backfill replication during the initial sync. The initial sync includes all old emails (not including emails between 30-60 days old) and can be scheduled T-21 days in advance of the planned cutover. The second pass controls the cutover date and time and includes email and calendar items between 30-60 days old. The migration team disables auto-forwarding on the Office 365 mailbox after the second cutover pass completes. They also set G Suite auto-forwarding to point to Office 365. Contact your FastTrack team for more information. Learn more.