What does this finding mean?
DNS authorisation for an external aggregate-report recipient could not be determined reliably.
DMARC result code
RUA authorisation could not be checked
dmarc.rua_authorization_lookup_failed
What is the next step?
Check the external _report._dmarc answer and DNS availability, then repeat the measurement.
Please note: The result code describes a technical measurement, not a guarantee of delivery, security or legal compliance.
Content reviewed on 20.08.2026.