DMARC

Also: Domain-based Message Authentication, Reporting and Conformance

Domain-based Message Authentication, Reporting and Conformance (DMARC) is the policy that stops scammers from sending email that looks like it came from your organization. It tells inboxes what to do with mail that fails SPF or DKIM: just report it, send it to spam, or reject it. Since 2024, Google and Yahoo require it from anyone sending email in bulk, which includes many nonprofit newsletters.

Related Terms

SPF

One of the two checks DMARC relies on, the list of services allowed to send email from your domain.

DKIM

One of the checks DMARC relies on, an invisible signature that proves an email is genuine.