Glossary: Endpoint and Application Security
DMARC (Domain-based Message Authentication, Reporting and Conformance)
Also written: _dmarc, DMARC record
A DNS record at _dmarc.DOMAIN that ties SPF and DKIM to the visible From domain, says what to do with mail that fails, and asks receivers for reports.
Where the book teaches it
Related terms
AlignmentPolicy (DMARC)SPF (Sender Policy Framework)DKIM (DomainKeys Identified Mail)rua