• 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.
• Troubleshoot network-based issues.
• Understand how the service health dashboard can be utilized to review active and ongoing service-related issues.
• Understand how Alert policies can be used to troubleshoot mail flow issues.

• Understand what mail flow rules are.
• Describe how mail flow rules work.
• Configure custom mail flow rules.

• 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.
• Define mail flow rules that apply encryption templates to encrypt email messages.

• 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.

• 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.
• Run realistic attack scenarios using Attack Simulator to help identify vulnerable users before a real attack impacts your organization.

• 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.
• Describe how sensitivity labels let you classify and protect your organization’s data.
• Create and manage inactive mailboxes.

• 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.

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

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

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

• 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.

• 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.
• Describe how Privileged Identity Management enables you to manage, control, and monitor access to important resources in your organization.

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

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

• 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.

• 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.

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

• 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.

• 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.

• 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.

• Describe the requirements for an IMAP migration and how it’s carried out.
• Move mailbox data using an IMAP migration.
• Plan for a cross-tenant mailbox migration.
• Prepare target user objects for a cross-tenant migration.

• 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.

A: This MS203 training covers a range of topics, including planning and deploying Exchange Online, managing recipients and mailboxes, configuring mail flow, securing messaging environments, implementing hybrid deployments, and managing security and compliance features in Microsoft 365 messaging.

A: MS-203 is designed for messaging administrators, messaging architects, and IT professionals who are responsible for managing and deploying messaging infrastructure in Microsoft 365. It is also suitable for individuals preparing for the Microsoft 365 Certified: Messaging Administrator Associate certification.

A: It is recommended that participants have a solid understanding of messaging concepts, experience with Exchange Server and Exchange Online administration, and familiarity with general Microsoft 365 concepts and administration.

A: By the end of this training, you will have the knowledge and skills to plan, deploy, and manage messaging infrastructure in Microsoft 365. You will learn how to configure Exchange Online, manage recipients and mailboxes, implement mail flow, secure messaging environments, set up hybrid deployments, and manage security and compliance features.

A: MS-203 includes hands-on exercises and labs that provide practical experience in managing and deploying messaging infrastructure in Microsoft 365. You will have the opportunity to apply the concepts learned in simulated environments, gaining valuable hands-on skills.