- A
Run an automated playbook to collect additional evidence.
Why wrong: Investigation can wait; containment first.
- B
Reset the user's password and require MFA.
Why wrong: No evidence of credential compromise.
- C
Block the external email domain in Exchange Online.
Why wrong: May block legitimate emails and not necessary.
- D
Remove the mailbox forwarding rule.
Immediately stops the exfiltration.
Question 1,176 of 1,639
SC-200 mailbox forwarding rule Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: mailbox forwarding rule. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Your company uses Microsoft Sentinel with the Microsoft Defender XDR connector. You receive an incident: 'Suspicious mailbox forwarding rule created.' The incident indicates that a user's mailbox in Exchange Online has a forwarding rule to an external email address. The user's account shows no other suspicious activity. You need to respond to the incident. The company policy requires preserving evidence for 30 days. Which action should you take FIRST?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Remove the mailbox forwarding rule.
The first priority is to stop the data exfiltration caused by the forwarding rule. Removing the forwarding rule is the most direct and immediate action to prevent further unauthorized email forwarding. Reset the password only if account compromise is suspected, but here no other suspicious activity is present. Blocking the external domain may be too broad and affect legitimate communication. An automated playbook can be used later for investigation, but immediate containment takes precedence.
Key principle: mailbox forwarding rule
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run an automated playbook to collect additional evidence.
Why it's wrong here
Investigation can wait; containment first.
- ✗
Reset the user's password and require MFA.
Why it's wrong here
No evidence of credential compromise.
- ✗
Block the external email domain in Exchange Online.
Why it's wrong here
May block legitimate emails and not necessary.
- ✓
Remove the mailbox forwarding rule.
Why this is correct
Immediately stops the exfiltration.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
mailbox forwarding rule
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- mailbox forwarding rule
- containment
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
mailbox forwarding rule
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review mailbox forwarding rule, then practise related SC-200 questions on the same topic to reinforce the concept.
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Respond to security incidents — study guide chapter
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FAQ
Questions learners often ask
What does this SC-200 question test?
Respond to security incidents — This question tests Respond to security incidents — mailbox forwarding rule.
What is the correct answer to this question?
The correct answer is: Remove the mailbox forwarding rule. — The first priority is to stop the data exfiltration caused by the forwarding rule. Removing the forwarding rule is the most direct and immediate action to prevent further unauthorized email forwarding. Reset the password only if account compromise is suspected, but here no other suspicious activity is present. Blocking the external domain may be too broad and affect legitimate communication. An automated playbook can be used later for investigation, but immediate containment takes precedence.
What should I do if I get this SC-200 question wrong?
Review mailbox forwarding rule, then practise related SC-200 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
mailbox forwarding rule
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Last reviewed: Jun 21, 2026
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