SMTP Strict Transport Security

Document Type Replaced Internet-Draft (individual)
Authors Daniel Margolis  , Mark Risher  , Nicolas Lidzborski  , Binu Ramakrishnan  , Alex Brotman  , Janet Jones  , Franck Martin  , Klaus Umbach  , Markus Laber 
Last updated 2016-03-18
Replaced by draft-brotman-mta-sts
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Replaced by draft-brotman-mta-sts
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


SMTP 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 sending SMTP servers to report upon and/or refuse to deliver messages that cannot be delivered securely.


Daniel Margolis (
Mark Risher (
Nicolas Lidzborski (
Binu Ramakrishnan (
Alex Brotman (
Janet Jones (
Franck Martin (fmartin (at) linkedin (dot com))
Klaus Umbach (klaus.umbach (at) 1und1 (dot de))
Markus Laber (markus.laber (at) 1und1 (dot de))

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