Source: https://uptimeify.io/resources/platform-and-support/glossary/dmarc

# DMARC

> DMARC is a DNS policy that tells receiving servers what to do with email that fails SPF and DKIM checks, and where to send reports about it.

DMARC ties SPF and DKIM together and lets you enforce a policy (none, quarantine, or reject) against spoofed mail using your domain. It is the key control for protecting your brand from phishing and improving deliverability.