Microsoft MS-203 : Microsoft 365 Messaging

Exam Code: MS-203

Exam Name: Microsoft 365 Messaging

Updated: Jul 20, 2026

Q & A: 396 Questions and Answers

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Career Prospects

The candidates with the Microsoft 365 Certified: Messaging Administrator Associate certification can take up different job roles. Some of these positions include a Systems Administrator, a Senior Consulting Engineer, a Microsoft Exchange Administrator, a Messaging Administrator, and a ServiceNow Application Administrator. The salary outlook for these titles is an average of $84,300 per annum. Some professionals can earn as much as $108,300 per year, depending on their job roles and level of experience they have gathered over the years in the industry.

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MS-203 exam dumps

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Languages: English

Retirement date: none

This exam measures your ability to accomplish the following technical tasks: manage organizational settings and resources; plan and manage the mail architecture; plan and implement a hybrid configuration and migration; and secure the messaging environment.

Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/ms-203

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Microsoft MS-203 Exam Syllabus Topics:

SectionObjectives
Manage messaging security and compliance- Anti-spam and anti-malware protection
  • 1. Microsoft Defender for Office 365 policies
    • 2. Safe Links and Safe Attachments
      - Data governance and compliance
      • 1. Data Loss Prevention (DLP)
        • 2. Retention policies
          Manage mail flow- Configure mail routing
          • 1. Transport rules
            • 2. Connectors and mail flow policies
              Troubleshoot and monitor messaging environments- Monitor mail flow and service health
              • 1. Message trace
                • 2. Service health dashboards
                  - Resolve messaging issues
                  • 1. Mail delivery troubleshooting
                    • 2. Client connectivity issues
                      Manage and maintain Microsoft 365 messaging infrastructure- Plan and configure Exchange Online
                      • 1. Mailbox types and licensing
                        • 2. Exchange Online setup and configuration
                          - Manage recipients and resources
                          • 1. User mailboxes and shared mailboxes
                            • 2. Distribution groups and mail contacts
                              Manage client access and mobility- Configure Outlook and mobile access
                              • 1. Exchange ActiveSync policies
                                • 2. Outlook connectivity and authentication

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