SMTP Security via Opportunistic DNS-Based Authentication of Named Entities Transport Layer Security
RFC 7672, “SMTP Security via Opportunistic DNS-Based Authentication of Named Entities Transport Layer Security”, is a Proposed Standard document published in October 2015 by V. Dukhovni, W. Hardaker. The canonical text is published by the RFC Editor.
Abstract
This memo describes a downgrade-resistant protocol for SMTP transport security between Message Transfer Agents (MTAs), based on the DNS-Based Authentication of Named Entities (DANE) TLSA DNS record. Adoption of this protocol enables an incremental transition of the Internet email backbone to one using encrypted and authenticated Transport Layer Security (TLS).
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7672 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7671 The DNS-Based Authentication of Named Entities Protocol: Updates and Operational Guidance
- RFC 7673 Using DNS-Based Authentication of Named Entities TLSA Records with SRV Records
- RFC 7674 Clarification of the Flowspec Redirect Extended Community
- RFC 7669 Assigning Digital Object Identifiers to RFCs
- RFC 7675 Session Traversal Utilities for NAT Usage for Consent Freshness
- RFC 7668 IPv6 over BLUETOOTH Low Energy
- RFC 7676 IPv6 Support for Generic Routing Encapsulation
- RFC 7667 RTP Topologies