Microsoft to stop honoring mail flow rules tracking user reporting
Microsoft will be retiring the mail flow rule which help you track end user reporting. This change is being made to improve the availability and reduce the latency of the submission service so that you can respond to threats (false negatives) more quickly and efficiently.
When this will happen:
Microsoft will be gradually rolling this out to customers starting late December 2023 and the roll out will be completed by late January 2024.
How this will affect your organization:
You will no longer be able to track end user report using these mail flow rules, once the change gets implemented.
What you need to do to prepare:
If you are routing report messages to a mailbox, we recommend going to user reported settings and under “reported message destinations”, setting the “send reported messages” to “My reporting mailbox only” and then providing the mailbox address you are routing to. Distribution groups and routing to an external or on-premises mailbox aren’t allowed.
If you are routing report messages to a mailbox for a particular report type, take the above step and create rules in the mailbox using the outlook client. You can specify which report “phish” or “junk” or “not junk”, you want to be ignored and filtered from your view. The report type is specified in the subject of the notification email sent to the mailbox.
If you are routing report messages to Microsoft via a custom add-in or another mechanism, we recommend either using the report button in Outlook for web or the report message add-in or the report phish add-in as described here.