What is DMARC?
DMARC — DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that protects domains from unauthorised use such as phishing and spoofing.
DMARC Explained in Detail
DMARC builds on two existing standards — SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) — by adding a policy layer and a reporting mechanism.
When properly enforced (policy set to reject), DMARC instructs receiving mail servers to block emails that fail authentication, effectively preventing attackers from impersonating your domain.
DMARC Enforcement Levels
- none — Monitor mode. Emails are delivered regardless; reports are generated.
- quarantine — Suspicious emails are moved to spam/junk.
- reject — Failing emails are outright blocked.
How Hunto AI Helps with DMARC
Explore the autonomous AI agents that address dmarc challenges.