Quick summary
- Term
- DMARC
- Plain-English definition
- DMARC is an email policy that tells receiving mail systems how to handle messages that fail SPF or DKIM checks.
- Technical definition
- DMARC is an email policy that tells receiving mail systems how to handle messages that fail SPF or DKIM checks.
- Commonly confused with
- DKIM checks.
- Related terms
- SPF, DKIM, Email Authentication
Definition
DMARC is an email policy that tells receiving mail systems how to handle messages that fail SPF or DKIM checks.
Why it matters
DMARC helps protect domains from spoofing and improves email authentication visibility.