This module is a suite of tools for implementing DMARC. It adheres to the 2013 DMARC draft, intending to implement every MUST and every SHOULD. This module can be used by... - MTAs and filtering tools like SpamAssassin to validate that incoming messages are aligned with the purported sender's policy. - email senders, to receive DMARC reports from other mail servers and display them via CLI and web interfaces. - MTA operators to send DMARC reports to DMARC author domains.