Domain-based Message Authentication, Reporting & Conformance

DMARC is a policy and reporting protocol for emails.

It is based on SFP et DKIM and is published through a TXT record on the domain DNS.

Tools

There is a free weekly monitoring with PostMark App available at dmarc.postmarkapp.com/. It is more than enough for basic domains with less than fifty users.

ParseDMARC Open source tool for parsing the records, built with Python.