Secure SMTP using DNS-Based Authentication of Named Entities (DANE) TLSA records.

Document Type Expired Internet-Draft (dane WG)
Author Tony Finch 
Last updated 2013-08-29 (latest revision 2013-02-25)
Replaces draft-fanf-dane-smtp
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


SMTP has a STARTTLS extension, but (especially in the case of inter- domain mail transfer) it only provides very limited security because it does not specify how to authenticate the server's certificate. This memo specifies how TLSA records in the DNS can be used for proper SMTP server authentication.


Tony Finch (

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