MICROSOFT 365 CERTIFIED: MESSAGING ADMINISTRATOR ASSOCIATE – SKILLS MEASURED

NOTE: The bullets that follow each of the skills measured are intended to illustrate how we are
assessing that skill. This list is not definitive or exhaustive.
NOTE: Most questions cover features that are General Availability (GA). The exam may contain
questions on Preview features if those features are commonly used.
Exam MS-203: Microsoft 365 Messaging
Manage Organizational Settings and Resources (30-35%)
Plan and manage organizational settings
◼ manage a Global Address List (GAL), including hierarchical address books (HAB)
◼ manage an Offline Address Book (OAB)
◼ manage address book policies
◼ manage email address policies
◼ plan and configure organization relationships and individual sharing
◼ manage add-ins from Microsoft 365 Admin Center
Plan and manage client access
◼ plan namespaces
◼ configure virtual directories and URLs in a hybrid environment
◼ configure global Outlook on the Web policies
◼ configure Autodiscover
◼ troubleshoot client access connectivity problems
Manage recipient resources
◼ manage archive mailboxes
◼ manage resource mailboxes
◼ manage groups including distribution lists, dynamic distribution lists, mail-enabled
security groups, and Microsoft 365 groups
◼ manage user mailboxes
◼ manage mailbox permissions, including delegation
◼ manage shared mailboxes, including converting to a shared mailbox
◼ manage license for shared resources
◼ create and manage contacts, including Mail contacts and Mail users
◼ manage email addresses for Microsoft Teams
Plan and Manage the Mail Transport Architecture (20-25%)
Plan and configure connectors
◼ plan connectors
◼ create and configure connectors, including between organizations
◼ configure enhanced filtering for connectors
Manage mail flow
◼ manage transport rules
◼ manage accepted and remote domains
◼ manage hybrid mail flow
Troubleshoot mail flow
◼ trace a message
◼ analyze a message trace
◼ analyze message headers
◼ analyze Non-Deliverable Reports (NDRs)
◼ troubleshoot by using the Microsoft Remote Connectivity Analyzer
◼ troubleshoot by using the Microsoft Support and Recovery Assistant
◼ troubleshoot by using transport logs and queues in a hybrid environment
Plan and Implement a Hybrid Configuration and Migration (15-20%)
Plan and implement a hybrid environment
◼ plan a hybrid deployment by using the Hybrid Configuration Wizard (HCW)manage the
Edge server role in a hybrid environment
◼ configure Organization Configuration Transfer (OCT)
◼ configure the environment by using the Hybrid Configuration Wizard
◼ deploy the Exchange Hybrid Agent
◼ manage the Exchange certificates lifecycle in a hybrid environment
Plan and implement migration
◼ evaluate migration methods, including cutover, minimal hybrid (express migration),
cutover, cross tenant, staged, PST Imports, IMAP, Google Workspace (formerly G-Suite),
batch migration by using the Exchange admin center
◼ configure migration endpoints in Microsoft 365
◼ manage mailbox migration batches
◼ troubleshoot mailbox migration
◼ plan a public folder migration to Microsoft 365
Secure the Messaging Environment (25-30%)
Manage role-based permissions in Exchange
◼ plan RBAC roles
◼ manage role groups
◼ assign user accounts to admin roles
◼ manage user roles
Manage message hygiene
◼ plan for message hygiene
◼ configure and manage Anti-spam settings
◼ configure and manage Anti-malware policies
◼ monitor and review quarantined items
◼ plan and configure Spam Confidence Levels (SCL)
◼ configure and manage Safe attachments
◼ configure and manage Safe links
◼ configure and manage Anti-phishing
◼ manage email user submissions
◼ add and manage DNS records for domains
◼ validate settings by using Configuration Analyzer
Manage compliance
◼ configure retention labels and retention policies
◼ configure data loss prevention (DLP) policies
◼ configure sensitivity labels and policies
◼ configure and analyze audit logs
◼ manage journal rules
◼ manage content search
◼ manage core eDiscovery cases (not including Advanced eDiscovery)