How to trace bounced messages from Exchange Online

[Emir_O]

Question is how to access message flow for the messages that are bounced by Exchange Online server.

I have tried to trace messages that i sent to non existing email address on my Exchange Online tennat from outside like outlook.com. I cant find them in Exchange Online Old/New Admin Center.

Is there a workaround?

[#2]

Hi Emir.
You can check mail flow trace exchange online in two ways.

Run a message trace in the classic EAC in Exchange Online
https://docs.microsoft.com/en-us/exchange/monitoring/trace-an-email-message/run-a-message-trace-and-...

Message trace in the Microsoft 365 Defender portal
https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/message-trace-scc?view=o...