Mailjet: DMARCbis is dead. Long live DMARC.

DMARCbis is now DMARC This matters because mailbox providers increasingly expect authenticated, aligned mail as baseline sender behavior. The updated RFCs mostly refactor, clarify, and modernize DMARC documentation; they do not fundamentally change DMARC’s core ‘aligned SPF or aligned DKIM’ evaluation model. In May 2026, the IETF published three new RFCs that replace the original DMARC spec: RFC 9989 (core protocol), RFC 9990 (aggregate reports), and RFC 9991 (failure reports). That sounds…