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Email Cutover to Office 365

This is intended as high level generic overview, nothing more 

 

 

 

Prep 

  • Prep MS 365 

    • Add domains 

    • Add users 

    • Add and apply licensing 

    • Ensure all objects in old source are in new one 

      • Contacts 

      • Distribution lists 

      • Shared Mailboxes 

  • User Tool (VEEAM/FLY) to create initial copy of all email from source email to MS 365 EOL 

    • Resolve all errors and problems 


Get Access to all DNS  

  • Update SPF Record to include old and new sources 

  • Reduce TTL  

  • Identify all email sources 

    • Phones 

    • Computer email clients 

    • Email generating software 

    • Scan to email devices 

    • Marketing and 3rd party sources 

  • Prep for company communications 

    • How to update your phone 

    • What to do to get your Outlook client to update 

    • What is the URL for MS 365 EOL 

    • How to validate your MS 365 password 

Cutover 

  • Day before 

    • Lower TTL on DNS 

    • Conduct incremental data sync 

  • Execution 

    • Update MX records 

    • Update AutoDiscover Record 

    • Validate mail flow 

    • Final cutover sync 

    • Disable source email access (if possible) 

    • Work with end users client access 

    • Update non-standard email source devices. 


 

 

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