E-mail Authentication for Internationalized Mail

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual in art area) - resurrect requested by Alexey Melnikov
Author John Levine 
Last updated 2017-01-04 (latest revision 2016-07-03)
Replaced by RFC 8616, RFC 8616
Stream Internet Engineering Task Force (IETF)
Expired & archived
pdf htmlized bibtex
Additional Resources
Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Alexey Melnikov
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


SPF, DKIM, and DMARC enable a domain owner to publish e-mail authentication and policy information in the DNS. In internationalized e-mail, domain names can occur both as U-labels and A-labels. This specification clarifies when to use which form of domain names when using SPF, DKIM, and DMARC.


John Levine (standards@taugh.com)

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