Domain-based Message Authentication, Reporting and Conformance (DMARC)

In white, the letters "DMARC", with the "M" stylistically an envelope, over a blue-tinted image of a screen showing an inbox with a man's profile in the background

DMARC is a mechanism that allows senders and receivers to monitor and improve protection of their domain from fraudulent email. Implementation of DMARC will ensure mail recipients can detect when spammers have spoofed the “From” address on mail messages. An implementation guide is also available.

DMARC was created and made available by the Global Cyber Alliance.