DMARC - Domain-based Message Authentication, Reporting, & Conformance

DMARC (Domain-based Message Authentication, Reporting & Conformance; RFC 7489 dated March 2015) is an email authentication standard that works in conjunction with SPF & DKIM, bringing long-missing features to email – enabling senders to gain visibility into how their email domains are used and abused, describing how to combine existing authentication technologies to create secure email channels, and providing receivers with clear directives on how to safely dispose of unauthorized email – all at Internet scale.

Example DNS record for DMARC:

_dmarc.domain.com. IN TXT “v=DMARC1; p=reject; rua=mailto:d@rua.agari.com; ruf=mailto:d@ruf.agari.com;”

DMARC builds upon DKIM and SPF to provide both protection and reporting.
DMARC builds upon DKIM and SPF to provide both protection and reporting.

The Inbound DMARC Visibility feature provides DMARC visibility to inbound email for domains owned by your company via the use of an Agari Email Sensor, to give you confidence that emails that you are sending to your employees, including those sent via third party senders, are passing DMARC authentication. See How DMARC Works