Exam MS-203 topic 3 question 82 discussion

Actual exam question from Microsoft's MS-203

Question #: 82
Topic #: 3

You have a Microsoft Exchange Online tenant named fabrikam.com that contains a user named User1.

User1 reports that three expected email messages from an external sender named [email protected] were NOT delivered. The external sender confirms that the messages were sent.

You run a message trace by using the All failed messages for the last 7 days default query.

In the results, you identify and expand one of the messages and discover the following error message.

550 5.1.10 RESOLVER.ADR.RecipientNotFound

You need to ensure that user1 can receive email messages from [email protected] .

What should you do next?

A. Validate the MX record of fabrikam.com.
B. Review the SPF record of contoso.com.
C. Validate the email address of [email protected].
D. Review the quarantine.

Show Suggested Answer

Suggested Answer: C 🗳️

by MDSCerts at Aug. 17, 2023, 1 p.m.

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MDSCerts

Highly Voted 8 months, 2 weeks ago

Selected Answer: C

should be C i guess, if MX record is incorrect he wouldn't find the email with invalid recipient

upvoted 5 times

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Amir1909

Most Recent 4 months, 4 weeks ago

C is correct

upvoted 2 times

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ServerBrain

6 months, 3 weeks ago

Selected Answer: C

Correct. It's only User1 affected..

upvoted 2 times

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Mighty_01

7 months, 4 weeks ago

550 5.1.10 RESOLVER.ADR.RecipientNotFound. This problem occurs if the user was created in Microsoft 365. In this scenario, the on-premises Exchange environment has no object to reference for the user. Therefore, all queries for that SMTP address fail.

upvoted 3 times

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