Invalid DMARC syntax
DMARC record cannot be parsed by receivers.
- Reading time:
- 5 min
- Difficulty:
- Intermediate
- Estimated duration:
- 5 min
- Prerequisites:
- None
- Last updated:
- 2026-07-15
- Author:
- empire
Related Concepts
Related Problems
- DMARC alignment failureSPF/DKIM pass but fail identifier alignment.
- DMARC policy not appliedPublished policy is not observed as expected by receivers.
- DMARC record missingNo DMARC TXT record exists at the organizational domain.
- DMARC reports not arrivingAggregate or failure reports are not received.
- External reporting not authorizedExternal rua/ruf destinations lack DNS authorization.
- Legitimate mail blocked after enforcementEnforcement blocks wanted senders still failing authentication.
- Subdomains not protectedSubdomain traffic is outside effective DMARC coverage.
- Unknown senders in DMARC reportsReports show sources not yet inventoried or authorized.