CAA Record Extensions for Account URI and ACME Method Binding

The information below is for an old version of the document
Document Type Expired Internet-Draft (acme WG)
Author Hugo Landau 
Last updated 2018-04-19 (latest revision 2017-08-30)
Replaces draft-landau-acme-caa
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state In WG Last Call
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The CAA DNS record allows a domain to communicate issuance policy to CAs, but only allows a domain to define policy with CA-level granularity. However, the CAA specification also provides facilities for extension to admit more granular, CA-specific policy. This specification defines two such parameters, one allowing specific accounts of a CA to be identified by URI and one allowing specific methods of domain control validation as defined by the ACME protocol to be required.


Hugo Landau (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)