Office 365 Exchange Migration Cutover 0bf8fOnsJo05957fE7FBSnzPJEs3RXx0       PREPARATION:   See other document if Exchange Hybrid Migration is option   365 Exchange Hybrid Migration   MFA   Need to get login information for DNS and domains   Need to get login information for current email server   Work  to get Office 365 account created for client   Start process to setup method of quick access to computers during cutover.  AKA setup GPO for Automate.   Get listing of all current email accounts and provide to client to verify no unknown accounts they are unaware that will need to be migrated   Work with client to ID all devices where email is generated   Outlook or similar desktop application   Smartphones   LOB applications that email    MFD/Copier/Scanners that scan to email   Work with the client to ID all locations where email is generated (for SPF records)   Current Exchange/email server location   Office 365 SPF records   If email is direct generated from LOB what is the public IP    If email is direct generated from scanner/copier what is public IP   If marketing email service is used, what IP need to be included for SPF   Link domains to Office 365   Increase licensing for Office 365 to appropriate number   Add user accounts to Office 365 and license   AD Sync when possible   Manual input when necessary   Ask client which personnel they want to have email on phone.  Some companies do not want this.   Update SPF record to additionally include Office 365 SPF records   Review requirements for non-Outlook nor smartphone email processes   Create documents for email on phone   DNS TTL - Be aware and communicate the length of time it will take for changes    Once all is ready work with client to set expectations for process and schedule cutover   CUTOVER:   Day Before: reduce TTL on all DNS records    Day Before: Email all client personnel email on phone setup   At designated time confirm with client that we are making change   Client is not to email during this transition.  This will reduce missed email during the process   Update DNS and wait for TTL to expire.  That way any transition email to the old server is captured.   Update Internal AD Autodiscover location:  Autodiscover Update   Have full listing of users posted and coordinate which techs will address which users   Outlook migration   Remote to individual's computer   Ensure all mail is downloaded.  Verify it is not just caching recent messages, all message.    Export entire mailbox to C:\Accent\PST (Ensure all aspects including contacts, calendar, email)   Duplicate file(s)   Create a new mail profile   Import old email and allow to process   LOB/MFD - update per individual specifications   Decommission   Review what steps will be needed to properly decommission the old system   Review and remove newly unused anti-spam and other related services.