What is DMARC? Domain-based Message Authentication Reporting Conformance explained (in ~5 mins)

The short version: DMARC is an email security standard that allows domain owners to monitor who’s sending email using their domain and instructs email receivers (like Gmail) to approve, quarantine, or reject emails that aren’t sent from an authenticated source.

The longer version → postmarkapp.com/glossary/dmarc

SPF → postmarkapp.com/glossary/sender-policy-framework
DKIM → postmarkapp.com/glossary/dkim-domainkeys-identified-mail
DMARC Digests app → dmarcdigests.com

Timestamps:
0:00 A phishing horror story
0:45 An introduction to DMARC and spoofing
1:43 How DMARC works
2:11 The 3 DMARC policies (approve | quarantine | reject)
3:10 Your DMARC record
3:35 Daily DMARC reports
4:20 DMARC in a nutshell (summary)