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Exam MS-203 topic 3 question 62 discussion

Actual exam question from Microsoft's MS-203
Question #: 62
Topic #: 3
[All MS-203 Questions]

You have a hybrid deployment that contains a Microsoft Exchange Online tenant and an on-premises Exchange Server 2019 server named Server1.

Server1 uses a certificate from a third-party certification authority (CA). The certificate is enabled for the SMTP service.

You replace the certificate with a new certificate.

You discover that delivery fails for all email messages sent from Server1 to your Microsoft 365 tenant.

You receive the following error message for all the queued email messages: “450 4.4.101 Proxy session setup failed on Frontend with 451 4.4.0 Primary target IP address responded with 451 5.7.3 STARTTLS is required to send mail.”

You need to ensure that the messages are delivered successfully from Server1 to the Microsoft 365 tenant.

What should you do?

  • A. From Server1, enable a self-signed certificate for the SMTP service.
  • B. From Server1, enable the new certificate for the IMAP4 service.
  • C. From Server1, run the iisreset command.
  • D. Run the Exchange Hybrid Configuration wizard.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by Ash_B38 at Feb. 10, 2023, 5:46 a.m.

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Ash_B38
Highly Voted 1 year, 3 months ago
Shoud be D - Run the exchange hybrid config
upvoted 5 times
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Amir1909
Most Recent 5 months, 1 week ago
D is correct
upvoted 1 times
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ServerBrain
7 months ago
Selected Answer: D
because "replace the certificate with a new certificate".
upvoted 1 times
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Cooljoy7777
7 months, 3 weeks ago
Selected Answer: A
Horrible how MS makes the question However, if the HCW is not run, or if a failure occurs for any other reason when you run the HCW, the TlsCertificateName property is not updated, and the new Exchange certificate is not used by the hybrid server's receive connector. In this scenario, the STARTTLS command is not present in SMTP communications, and the mail flow from Microsoft 365 fails. Make sure that the new certificate is enabled for SMTP. If it's not, run the following command to enable the SMTP service on the newly installed certificate. https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/cannot-receive-mail-with-new-certificate#resolution
upvoted 1 times
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Cooljoy7777
7 months, 3 weeks ago
Selected Answer: D
D. Run the Exchange Hybrid Configuration wizard https://learn.microsoft.com/en-us/exchange/hybrid-deployment/hybrid-agent
upvoted 1 times
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MRLearner
1 year, 1 month ago
Selected Answer: A
A should be the correct one based on the article https://learn.microsoft.com/en-us/exchange/troubleshoot/email-delivery/cannot-receive-mail-with-new-certificate.
upvoted 2 times
Ladio21
1 year ago
A. From Server1, enable a self-signed certificate for the SMTP service. (Enable a self-signed??) Not sure. Should be D the correct answer.
upvoted 1 times
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Ayham_J
1 year, 1 month ago
Selected Answer: D
D is the correct answer
upvoted 2 times
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reyrey
1 year, 1 month ago
D is the correct answer!!!
upvoted 2 times
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