SMTP MTA Strict Transport Security

Document Type Replaced Internet-Draft (individual)
Authors Daniel Margolis  , Mark Risher  , Nicolas Lidzborski  , Wei Chuang  , Brandon Long  , Binu Ramakrishnan  , Alex Brotman  , Janet Jones  , Franck Martin  , Klaus Umbach  , Markus Laber 
Last updated 2016-04-25
Replaces draft-margolis-smtp-sts
Replaced by RFC 8461, RFC 8461
Stream (None)
Expired & archived
pdf htmlized bibtex
Additional Resources
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-uta-mta-sts, draft-ietf-uta-mta-sts
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active.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


SMTP MTA-STS is a mechanism enabling mail service providers to declare their ability to receive TLS-secured connections, to declare particular methods for certificate validation, and to request that sending SMTP servers report upon and/or refuse to deliver messages that cannot be delivered securely.


Daniel Margolis (
Mark Risher
Nicolas Lidzborski
Wei Chuang
Brandon Long
Binu Ramakrishnan
Alex Brotman (
Janet Jones
Franck Martin
Klaus Umbach
Markus Laber

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