External Mail Delivery Report Not Available in ECP - Exchange 2019

Question

Dear Expertise,

I have an Exchange 2019 mail solution that includes Edge Servers, Reverse Proxy with WAF, and MSG in our email flow architecture. I’m experiencing an issue where delivery report information is no longer available for external incoming emails in ECP. However, the delivery reports for internal emails are showing correctly.

Incoming Email Flow: Internet -> MSG -> Edge Server -> Exchange Server

Steps I Have Taken:

• Verified that message trace in Management Shell shows external incoming mail logs correctly. 
• All incoming external mail statuses do not show in delivery reports in ECP.
• The servers are fully updated with the latest Cumulative Updates (CU), Security Updates (SU), and hotfixes.
• The default retention period is set for message logs.

Now, I am seeking advice on how to resolve this issue. Is there any specific configuration or troubleshooting step that I may have missed? Could there be any firewall, message tracking, or log retention configurations contributing to this issue?

 

Thank you in advance for your help.

Answer 1

Hi,

Welcome to the Microsoft Q&A platform!

Here are a few additional things you might consider checking:

Ensure that message tracking is enabled on all your Exchange servers. You can verify this by running the following command in the Exchange Management Shell:

Get-TransportService | Select-Object Name, MessageTrackingLogEnabled

If message tracking is disabled on any server, you can enable it using:

Set-TransportService -Identity "ServerName" -MessageTrackingLogEnabled $true

Verify that your firewall or reverse proxy is not blocking any necessary ports or protocols required for message tracking logs to be generated and accessed.

Ensure that the Edge Server can communicate with the Exchange Server without any restrictions that might affect logging.

Double-check the retention settings for message tracking logs. Ensure they are configured to retain logs for a sufficient period to allow for delivery report generation. You can check and set the retention period with:

Get-TransportService | Select-Object Name, MessageTrackingLogMaxAge
Set-TransportService -Identity "ServerName" -MessageTrackingLogMaxAge 30.00:00:00

Check the event logs on your Exchange servers for any errors or warnings related to message tracking or delivery reports. This can provide additional clues about what might be going wrong.