DMARC_EXTERNAL_REPORT_UNAUTHORIZED

error

Reports are addressed to another domain that has not authorised receiving them, so they are silently discarded.

Something is wrong and mail or certificates are affected.

How we know

unauth-reports.test
The authorized/unauthorized pair for RFC 7489 §7.1. reports.test publishes dmarc.test._report._dmarc; unauth-reports.test is a real zone that deliberately does not, so the absence is NXDOMAIN rather than an unreachable server — a misconfiguration rather than uncertainty.