Thank you, Jim. Definitely should be a part of the conversation.
You are on the Agenda!
Orit.

> -----Original Message-----
> From: Uta [mailto:uta-boun...@ietf.org] On Behalf Of Jim Fenton
> Sent: Thursday, March 24, 2016 7:13 PM
> To: uta@ietf.org
> Subject: [Uta] REQUIRETLS: another SMTP TLS mechanism
> 
> Not to distract from the STS discussion, but I thought I'd point out
> another approach to SMTP TLS 'encouragement' that I submitted a few
> weeks ago: draft-fenton-smtp-require-tls-01. There has been some
> discussion of this draft, primarily on the ietf-smtp mailing list and a
> little on the perpass list.
> 
> REQUIRETLS is an SMTP service extension that allows an SMTP client to
> specify (via a MAIL FROM option) that a given message must be sent over
> a TLS protected session with specified security characteristics. Options
> allow the specification of allowable methods of server certificate
> verification, including web-PKI and DANE. In advertising its support for
> REQUIRETLS, the SMTP server is promising to honor that requirement.
> 
> The idea here is that REQUIRETLS allows the SMTP client to override the
> default "deliver even if you can't do it securely" behavior of SMTP. The
> philosophy is that the sender of the message (SMTP client) is in the
> best position to know if a given message should only be sent via TLS,
> either based on some information it has about the sensitivity of the
> message or based on the client's local policy.
> 
> I plan on giving a short talk on REQUIRETLS (remotely) at the BA UTA
> meeting.  Questions or comments are of course welcome, either here or on
> ietf-smtp.
> 
> -Jim
> 
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