If there is no or less data available on your TDMARC dashboard, there can be a few reasons behind it. One of the reasons can be a low volume of outbound emails. If the volume of emails sent from your domains is low, the data associated with it will be less as well.

Another reason can be that if you are using Microsoft mailboxes and a large portion of your outbound emails are sent to internal Microsoft email IDs, Microsoft does not generate DMARC aggregate reports for internal tenant-to-tenant email traffic. As a result, these emails will not appear on the TDMARC dashboard.