Infrastructure Support – Office365 Administration

Challenges:

Limited documentation
Phased migration from on-prem to hybrid and then to cloud
Mailbox sizes during migration to cloud
3rd party add-on integration failures during migration

Solution Approach:

Managing mailbox databases to accumulate storage by moving mailboxes when required
Installing update rollups and security updates for CAS, HUB, UM and mailbox servers
Rebooting Exchange servers to ensure equal system resource allocation for all the databases
Monitoring and verifying replication health and status for the mailbox servers in DAG using exchange management shell
Configured accepted domains, send connectors for the hybrid mail flow
Configured directory sync in staging mode
Planning mailbox migrations in phases considering various departments
Performing mailbox moves to office 365 and completing the move requests as scheduled
Configuring transport rules on office 365 to improve the tenant Microsoft Score
Manage recipients, Groups, resource mailboxes, shared mailboxes and active sync devices
Setup conditional access for Office 365 apps and Intune policies to manage ActiveSync devices
Enable auto expand archive quotas, archive mailboxes and Set up retention tags and retention policies

ATMECS Contribution:

Suggested and implemented disabling email forwarding option from the office 365 outlook web app options to improve security
Outlook settings such as safe senders list, auto download pictures for safe senders using GPO to increase usability

Infrastructure Support – Office365 Administration

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