In the EAC, go to Mail flow > message trace.ĭepending on what you're searching for, you can enter values in the following fields. If you're a Microsoft 365 or Office 365 for business admin, see Contact support for business products - Admin Help. Visit the forums at Exchange Online or Exchange Online Protection. Having problems? Ask for help in the Exchange forums. To see what permissions you need, see the 'Message trace' entry in the Feature permissions in Exchange Online topic.įor information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard shortcuts for the Exchange admin center. You need to be assigned permissions before you can perform this procedure or procedures. To find and open the classic EAC, see Exchange admin center in Exchange Online. What do you need to know before you begin? CSV file.įor a video walkthrough of message trace and other mail flow troubleshooting tools, see Find and fix email delivery issues as a Microsoft 365 or Office 365 for business admin. If a message is more than 7 days old, you can only view the results in a downloadable. Message trace data is available for the past 90 days.

After running the message trace, you can view the results in a list, and then view the details about a specific message. The Exchange message trace link in the Microsoft 365 Defender portal opens message trace in the modern EAC.Īs an administrator, you can find out what happened to an email message by running a message trace in the Exchange admin center (EAC). For more information, see Message trace in the modern Exchange admin center. Message trace is available in the modern Exchange admin center.

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