The End of ARC: What the IETF's Move to Retire RFC 8617 Means for Your Forwarded Mail
On April 22, 2026, the IETF DMARC working group published draft-ietf-dmarc-arc-to-historic-00, calling for RFC 8617 to be reclassified as a Historic standard. The working group had been rechartered less than a week …