Exam MS-203: Microsoft 365 Messaging


This exam will retire on December 31, 2023. Read the blog post.

Candidates for this exam are Microsoft 365 messaging administrators who manage a secure, efficient, and effective email collaboration platform using Microsoft Exchange Online and Microsoft 365.

Messaging administrators plan, configure, and manage recipients, mail flow, threat protection, compliance, and client connectivity.

Messaging administrators collaborate with administrators of other workloads, including security, compliance, identity, and networking, to implement a secure cloud messaging topology that meets the business needs of an enterprise.

Candidates for this exam should have a working knowledge of authentication types, licensing, integration with Microsoft 365 applications, Exchange Management Shell, Microsoft Purview, and Microsoft Azure Active Directory (Azure AD), part of Microsoft Entra.


The English language version of this exam was updated on May 2, 2023. Review the study guide linked in the “Tip” box for details about the latest changes. If a localized version of this exam is available, it will be updated approximately eight weeks after this date. While Microsoft makes every effort to update localized versions as noted, there may be times when the localized versions of this exam are not updated on this schedule.

Passing score: 700. Learn more about exam scores.


Part of the requirements for: Microsoft 365 Certified: Messaging Administrator Associate

Related exams: none

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Schedule exam

  • MS-203: Microsoft 365 Messaging

    Languages: English, Japanese, Chinese (Simplified), Korean, German, French, Spanish, Portuguese (Brazil), Chinese (Traditional), Italian

    Retirement date: **

    This exam measures your ability to accomplish the following technical tasks: manage Microsoft Exchange Online settings and resources; plan and manage the mail transport architecture; and secure the messaging environment.

    Price based on the country or region in which the exam is proctored.

    for Microsoft 365 Messaging

    All objectives of the exam are covered in depth so you'll be ready for any question on the exam.

Skills measured

  • The English language version of this exam was updated on May 2, 2023. Review the study guide linked in the preceding “Tip” box for details about the skills measured and latest changes.
  • Manage Microsoft Exchange Online settings and resources (40–45%)
  • Plan and manage the mail transport architecture (25–30%)
  • Secure the messaging environment (25–30%)

Two ways to prepare

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* Pricing does not reflect any promotional offers or reduced pricing for Microsoft Certified Trainers and Microsoft Partner Network program members. Pricing is subject to change without notice. Pricing does not include applicable taxes. Please confirm exact pricing with the exam provider before registering to take an exam.

** Complete this exam before the retirement date to ensure it is applied toward your certification. After the retirement date, please refer to the related certification for exam requirements.