MS-220T00: Troubleshoot Microsoft Exchange Online — Lesson 2: Mail Flow, Protection, Recipients, and Client Connectivity

Topics Covered

• Resolve transport rules, anti-spam, anti-malware, quarantine, and delivery failures
• Diagnose Outlook, mobile, Autodiscover, protocol, and client-connectivity issues
• Investigate identity, modern authentication, conditional access, and sign-in failures
• Step-by-step implementation workflow and configuration decisions
• Hands-on verification of core features, data, and expected results
• Documentation of assumptions, dependencies, naming, and change controls

Guided Practice Steps

1. Translate the lesson requirement into a clear MS-220T00: Troubleshoot Microsoft Exchange Online implementation or analysis objective.
2. Document assumptions, selected tools or features, dependencies, risks, and expected results.
3. Perform the guided task, capture evidence, and compare the result with the acceptance criteria.
4. Record issues, corrective actions, and a reusable operational or development note.

Practical Activity

Trace a failed message and isolate transport, protection, recipient, or client causes.

• Define the scenario, inputs, constraints, and expected outcome.
• Complete the activity and preserve screenshots, outputs, logs, code, or decision evidence.
• Review the result, identify gaps, and document corrective or improvement actions.

Validation Checklist

• The stated requirement and expected outcome are clear.
• Configuration, code, data, or design decisions are documented.
• Normal, boundary, failure, security, and operational considerations are reviewed.
• Evidence supports the conclusion and the next action is prioritized.

Lesson Outcome

Learners can explain and apply Mail Flow, Protection, Recipients, and Client Connectivity within a realistic MS-220T00: Troubleshoot Microsoft Exchange Online scenario and support the result with validation evidence.