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Secure SMTP with TLS, DNSSEC and TLSA records.

Document type: Replaced Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2013-02-20 (latest revision 2012-06-27)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-dane-smtp
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active.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


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)