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.