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RFC 9495
Title: Certification Authority Authorization (CAA)
Processing for Email Addresses
Author: C. Bonnell
Status: Standards Track
Stream: IETF
Date: October 2023
Mailbox: [email protected]
Pages: 8
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-lamps-caa-issuemail-07.txt
URL: https://www.rfc-editor.org/info/rfc9495
DOI: 10.17487/RFC9495
The Certification Authority Authorization (CAA) DNS resource record
(RR) provides a mechanism for domains to express the allowed set of
Certification Authorities that are authorized to issue certificates
for the domain. RFC 8659 contains the core CAA specification, where
Property Tags that restrict the issuance of certificates that certify
domain names are defined. This specification defines a Property Tag
that grants authorization to Certification Authorities to issue
certificates that contain the key purpose in the extension and at
least one value or value of type that includes the domain name in
the extension.
This document is a product of the Limited Additional Mechanisms for PKIX and
SMIME Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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