Check DMARC (Domain-based Message Authentication, Reporting, and Conformance) records for any domain.
About DMARC
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that helps protect your domain from email spoofing and phishing attacks.
Common DMARC Policies:
- none: Monitor mode - no action taken on failed authentication
- quarantine: Failed messages are marked as spam
- reject: Failed messages are rejected