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Microsoft 365 Messaging (MS-203T00)

SS Course: GK100871

Course Overview


This course examines the key elements of Microsoft 365 messaging administration, including message transport and mail flow, messaging security, hygiene, and compliance, messaging infrastructure, and hybrid messaging.


Scheduled Classes

06/12/23 - GVT - Virtual Classroom - Virtual Instructor-Led
07/10/23 - GVT - Virtual Classroom - Virtual Instructor-Led
08/07/23 - GVT - Virtual Classroom - Virtual Instructor-Led
10/23/23 - GVT - Virtual Classroom - Virtual Instructor-Led



Module 1: Explore transport services

  • Describe the transport components of Exchange.
  • Plan an effective message routing for your organization.
  • Modify message flow for your organization.
  • Describe which transport agents exist and what they do.

Module 2: Configure message transport

  • Configure the different transport options.
  • Plan and set up domains for your organization.
  • Understand how the receive and send connectors work.

Module 3: Manage transport rules

  • Understand what transport rules are.
  • Describe how transport rules work.
  • Configure custom transport rules.
  • Describe how transport rules can be used for data loss prevention.

Module 4: Manage mail flow

  • Manage mail flow in Exchange organizations.
  • Understand mail flow for Exchange Servers.
  • Manage mail flow for Exchange Online.
  • Describe and manage mail flow in hybrid environments.

Module 5: Troubleshoot mail flow

  • Understand how to troubleshoot SMTP mail flow issues.
  • Describe how to troubleshoot issues with a shared namespace.
  • Describe how to troubleshoot Transport Layer Security encryption issues.
  • Understand how Alert policies can be used to troubleshoot mail flow issues.

Module 6: Troubleshoot transport issues

  • Troubleshoot network-based issues.
  • Plan troubleshooting procedures for connector and agent issues.
  • Plan troubleshooting procedures for architectural issues.
  • Describe how to troubleshoot transport issues with coexistence.

Module 7: Troubleshoot mail flow using logs

  • Create searches for the message tracking log.
  • Describe how to troubleshoot using the protocol logs.
  • Understand how to work with the event logging for Exchange.

Module 8: Plan for message security

  • Explain the use and features of Exchange Online Protection.
  • Plan message routing for Exchange Online Protection.
  • Investigate the available EOP reports and logs that enable organizations to monitor message hygiene.

Module 9: Manage anti-malware and anti-spam policies

  • Understand the different message header fields relevant for spam and spoofing protection.
  • Configure anti-spam and anti-malware filters in Exchange Server.
  • Manage extra features for outbound spam filtering and quarantine.
  • Implement protection features against phishing and spoofing.
  • Create transport rules for custom requirements.

Module 10: Explore threat protection in Microsoft 365 Defender

  • Describe the threat protection features of Microsoft Defender for Office 365.
  • Understand how the Configuration analyzer reviews threat protection policies and provides suggestions for improvement.
  • Describe the protection provided by Safe Attachment and Safe Links policies.
  • Understand the spoof intelligence features provided by Exchange Online Protection.
  • Describe how Microsoft Defender anti-phishing policies work.
  • Understand the process to manage the Tenant Allow/Block list in Microsoft 365 Defender.
  • Understand how Advanced Hunting can be used to track events in your secure messaging environment.

Module 11: Explore messaging compliance in Microsoft 365

  • Describe different policy and compliance features for messaging.
  • Evaluate the different administrator roles in Microsoft 365.
  • Plan retention policies for Exchange Online mailboxes.
  • Create message traces to understand the mail flow in your Exchange Online organization.

Module 12: Explore messaging compliance in Exchange

  • Describe litigation and in-place holds in Exchange Server.
  • Plan retention and deletion with Message Records Management (MRM).
  • Analyze your Exchange organization's message tracking log.

Module 13: Manage Exchange Online archiving and auditing

  • Describe what in-place archiving is and how it works.
  • Understand the differences between journaling and archiving.
  • Identify how mailbox and administrator audit logs are used.

Module 14: Manage Content Search

  • Design content searches to search for messages in your organization.
  • Describe eDiscovery cases and in-place eDiscovery for Exchange.

Module 15: Manage authentication for messaging

  • Configure password policy options.
  • Configure self-service password management.
  • Implement multifactor authentication.
  • Plan password policies.
  • Configure modern authentication in Exchange Online.

Module 16: Configure organizational settings

  • Configure workload policies and throttling.
  • Configure quota configurations.
  • Deploy Microsoft 365 Integrated apps.

Module 17: Configure organizational sharing

  • Provide an overview of Exchange federated delegation sharing features.
  • Describe federated sharing components.
  • Identify considerations for designing and implementing federation trusts and certificates.
  • Implement organization relationships.
  • Implement sharing policies.

Module 18: Manage administrator roles

  • Describe how RBAC is used to assign roles to users.
  • Understand management role groups and their administrative tasks.
  • Assign the built-in management roles for messaging administration.
  • Create custom management roles and assign them through role assignment policies to users.
  • Troubleshoot RBAC management roles.

Module 19: Manage user roles

  • Describe the built-in end-user roles.
  • Configure role assignment policies.
  • Create new custom roles and role assignment policies.

Module 20:Analyze role-based permissions

  • Identify the differences between shared permissions and split permissions.
  • Describe multi-forest permissions.
  • Identify the differences between the permission models.

Module 21: Explore the different types of Exchange recipients

  • Describe the different recipient objects in Exchange.
  • Examine how organizations use resource mailboxes.
  • Compare shared mailboxes to linked mailboxes.
  • Describe how recipients can be grouped together to improve collaboration.
  • Examine how organization us public folders.

Module 22: Create and manage Exchange recipients

  • Manage mailbox settings.
  • Manage resource mailboxes and shared mailboxes.
  • Create and manage mail contacts and mail users.
  • Manage permissions for recipients.
  • Create and manage groups.
  • Create and manage public folders.

Module 23: Manage email addresses, lists, and resources

  • Describe address lists.
  • Create and manage address lists.
  • Describe address book policies.
  • Configure offline address books.
  • Describe email address policies.

Module 24: Explore Exchange hybrid deployment requirements

  • Describe connection options that are available for connecting on-premises Exchange to Microsoft 365.
  • List and describe components of a hybrid deployment.
  • Describe Azure Active Directory Connect (Azure AD Connect).
  • Identify Microsoft 365 identity options for Exchange hybrid.
  • Compare Exchange delegated federation to OAuth.

Module 25: Plan and configure a hybrid deployment using the Hybrid Configuration Wizard

  • Plan for Exchange Hybrid configuration.
  • Describe Organization Configuration Transfer.
  • Explain Exchange Modern Hybrid and Hybrid Agent.
  • Plan mail flow options for a hybrid deployment.
  • Describe the prerequisites to run the Microsoft 365 Hybrid Configuration Wizard.
  • Explain best practices for implementing a hybrid deployment.

Module 26: Provide a gateway for Internet email using Edge Transport servers

  • Describe the purpose and functionality of Edge Transport servers.
  • Explain the infrastructure requirements for Edge Transport servers.
  • Describe the Edge Subscription process using EdgeSync.
  • Plan for message flow with an Edge Transport server.

Module 27: Implement advanced hybrid functionality

  • Manage a hybrid deployment.
  • Describe when you must configure Public Folder coexistence with Microsoft 365.
  • Explain how to configure Oauth for a mixed Exchange environment.
  • Describe how to configure OneDrive attachments for on-premises mailboxes.

Module 28: Troubleshoot hybrid deployments

  • Troubleshoot directory synchronization.
  • Troubleshoot pass-through authentication and single sign-on.
  • Troubleshoot transport with Exchange Online.
  • Troubleshoot client access in coexistence.
  • Troubleshoot the Mailbox Replication service.

Module 29: Plan mailbox migrations

  • Describe the migration and coexistence strategies with Exchange Online.
  • Describe considerations that affect which migration option to use.
  • Determine whether DNS MX records must be changed during a mailbox migration.

Module 30: Run IMAP migrations

  • Describe the requirements for an IMAP migration and how it s carried out.
  • Move mailbox data using an IMAP migration.

Module 31: Run cutover and staged migrations

  • Describe the requirements for both cutover and staged migrations.
  • Identify the steps involved in running both cutover and staged migrations.
  • Create and manage migration batches in the Exchange Admin Center.

Module 32: Run advanced mailbox migrations

  • Import PST Files to Exchange Online mailboxes.
  • Migrate Public Folders to Exchange Online.
  • Plan for a cross-tenant mailbox migration.
  • Prepare target user objects for cross-tenant migration.



    This course is designed for persons who are aspiring to the Microsoft 365 Messaging Administrator role.

      Who Should Attend


      The Messaging Administrator plans, deploys, configures, troubleshoots, and secures the messaging infrastructure in a hybrid and cloud enterprise environment. Responsibilities include managing recipients, mailboxes, transport, mail flow, administrative roles, threat protection, compliance, migrations, and client connectivity. To implement a secure hybrid topology that meets the business needs of a modern organization, the Messaging Administrator must collaborate with other workload administrators and the Microsoft 365 enterprise administrator. The Messaging Administrator should have a working knowledge of authentication types, licensing, and integration with Microsoft 365 applications.