RFC 6651 · PROPOSED STANDARD · 2012
MON · 15 JUN 2026
Extensions to DomainKeys Identified Mail for Failure Reporting
Overview
RFC 6651, “Extensions to DomainKeys Identified Mail for Failure Reporting”, is a Proposed Standard document published in June 2012 by M. Kucherawy. The canonical text is published by the RFC Editor.
Abstract
This document presents extensions to the DomainKeys Identified Mail (DKIM) specification to allow for detailed reporting of message authentication failures in an on-demand fashion. [STANDARDS-TRACK]
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 6651 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 6650 Creation and Use of Email Feedback Reports: An Applicability Statement for the Abuse Reporting Format
- RFC 6652 Sender Policy Framework Authentication Failure Reporting Using the Abuse Reporting Format
- RFC 6649 Deprecate DES, RC4-HMAC-EXP, and Other Weak Cryptographic Algorithms in Kerberos
- RFC 6653 DHCPv6 Prefix Delegation in Long-Term Evolution Networks
- RFC 6648 Deprecating the "X-" Prefix and Similar Constructs in Application Protocols
- RFC 6654 Gateway-Initiated IPv6 Rapid Deployment on IPv4 Infrastructures
- RFC 6647 Email Greylisting: An Applicability Statement for SMTP
- RFC 6655 AES-CCM Cipher Suites for Transport Layer Security