Posts tagged: ietf
RFC 9989 DMARC: What Changed From RFC 7489
RFC 9989 replaces RFC 7489 as DMARC's Standards-Track spec (May 2026). What changed: the RFC 9990 aggregate / 9991 failure split, tree walk, pct removed.
DKIM2 Explained: The 2026 Successor to ARC and DKIM
DKIM2 is the IETF's per-hop chained-signature successor to ARC and DKIM. Five drafts, four contested questions, and what email admins track in 2026.