Using Microsoft Message Header Analyzer to troubleshoot email issues

Situation:  The client uses office 365 for their email. They would like to know if Microsoft offer any tool for them to troubleshoot email issues such as quarantine, not deliverable.

Resolution: Yes, one tools is Microsoft Message Header Analyzer. this post shows how to use it based on a quarantined email.

1. Login Office 365.
2. Go to Microsoft 365 admin center.
3. Click on Security.
4. Click on Review.
5. Double click on Quarantine to open it.

6. Open the quarantined and click on 3 dots. Then click on View message headers.

7. Copy message header.

8. Click on Microsoft Message Header Analyzer.

9. Read the report carefully. in our example, the problem is Protection policy: PHISH.