RFC 8997 · PROPOSED STANDARD · 2021
MON · 27 JUL 2026
Deprecation of TLS 1.1 for Email Submission and Access
Overview
RFC 8997, “Deprecation of TLS 1.1 for Email Submission and Access”, is a Proposed Standard document published in March 2021 by L. Velvindron, S. Farrell. It updates RFC 8314. The canonical text is published by the RFC Editor.
Abstract
This specification updates the current recommendation for the use of the Transport Layer Security (TLS) protocol to provide confidentiality of email between a Mail User Agent (MUA) and a Mail Submission Server or Mail Access Server. This document updates RFC 8314.
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.
Read this RFC
The canonical text of RFC 8997 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
Relationships to other RFCs
Other RFCs from 2021
- RFC 8996 Deprecating TLS 1.0 and TLS 1.1
- RFC 8998 ShangMi Cipher Suites for TLS 1.3
- RFC 8995 Bootstrapping Remote Secure Key Infrastructure
- RFC 8999 Version-Independent Properties of QUIC
- RFC 8994 An Autonomic Control Plane
- RFC 9000 QUIC: A UDP-Based Multiplexed and Secure Transport
- RFC 8993 A Reference Model for Autonomic Networking
- RFC 9001 Using TLS to Secure QUIC