Glossary: Security+ Exam Prep 3: Practice Exams

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

Also written: DMARC, p=none, p=quarantine, p=reject

A policy published in DNS that tells receiving mail servers what to do with mail that fails authentication for a domain. p=none takes no action, p=quarantine sends the mail to spam, and p=reject refuses it.