DMARC Is Now a Proper Internet Standard: What Changed in RFC 9989/9990/9991 (opens in new tab)

DMARC has been an Informational RFC since 2015. That changed this month. RFC 9989 replaces RFC 7489 and elevates DMARC to Standards Track, reflecting over a decade of deployment experience and near-universal adoption across the email ecosystem. The spec was also split into three separate documents: RFC 9989 — core DMARC protocol RFC 9990 — aggregate reporting (RUA) RFC 9991 — failure reporting (RUF) Splitting them allows each component to evolve independently. Here's what changed. The DNS Tre...