Microsoft 365 Email Migration Itinerary

Domain: arrowinteriorservices.co.uk

📅 Wednesday (Today)

Phase 1: Initial Assessment & DNS Access

• Access the 123-reg DNS account (details from Simon at TIC Design).

• Confirm control panel access for arrowinteriorservices.co.uk.

Phase 2: Remote Session (4:00 PM)

• Remote into Debra’s computer to:

  • Record existing email server settings (POP/IMAP).

  • Collect Debra’s email login credentials.

• Request login credentials for Damien’s mailbox (also scheduled for migration).

📅 Thursday

Phase 3: Domain Setup & Mailbox Configuration

• Add and verify arrowinteriorservices.co.uk in the Microsoft 365 tenancy.

• Create three user mailboxes.

• Configure Microsoft Migration Assistant to begin syncing Debra and Damien’s email from the old provider.

Phase 4: Distribute Login Credentials

• Send Outlook Web Access (OWA) login credentials to all users in the afternoon.

  • Ensures access to new mailboxes during DNS changeover.

  • Prevents missing emails during the transition window.

Phase 5: Evening DNS Cutover

• Update MX, SPF, Autodiscover, and other relevant DNS records to point to Microsoft 365.

• Confirm mail flow begins routing to Microsoft.

📅 Friday

Phase 6: Remote Session & Final Setup

• Remote sessions with users to:

  • Complete configuration of email accounts in Outlook.

  • Decide whether to keep old accounts in Outlook during transition.

    • Can be removed during the session or later manually.

    • Optional follow-up next week for assistance.

Phase 7: Calendar & Address Book Review

• Export any company calendars or address books as needed.

Phase 8: Best Practices & Security

• Finalise Microsoft 365 settings:

  • DKIM

  • DMARC

  • Additional security and performance optimisations.

📅 Ongoing (Post-Migration)

• Microsoft Migration Assistant will continue syncing from legacy mailboxes every 24 hours for up to 7 days.

• Users who remove their old accounts early will still receive updates from any messages that come in late.