A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : SMTP security via opportunistic DANE TLS
Author(s) : Viktor Dukhovni
Filename : draft-dukhovni-smtp-opportunistic-tls-00.txt
Pages : 13
Date : 2013-05-18
Abstract:
This memo describes an experimental protocol for opportunistic TLS
security based on the DANE TLSA PKI. The design goal is an
incremental transition of the Internet email backbone (MTA to MTA
SMTP traffic) from today's unauthenticated and typically unencrypted
connections to TLS encrypted and authenticated delivery when the
client is DANE TLSA aware and the server domain publishes DANE TLSA
records for its MX hosts. This protocol has been implemented by
author in the Postfix MTA. It is hoped that other MTA
implementations will find this protocol well suited to their needs
and will adopt interoperable implementations. This protocol may be
suited to other use-cases for opportunistic TLS beyond SMTP, but such
use-cases are not covered here, and will need to be defined in
separate specifications.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-dukhovni-smtp-opportunistic-tls
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-dukhovni-smtp-opportunistic-tls-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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