Challenge / Response Interworking (CRI) Framework for Challenge / Response Email Systems
|Document||Type||Expired Internet-Draft (asrg RG)|
|Intended RFC status||(None)|
Expired & archivedplain text pdf html bibtex
|Document shepherd||No shepherd assigned|
|Send notices to||(None)|
SMTP was designed simply to deliver email messages without authenticating sources or senders of email messages. In an affort to reduce spam on the Internet, Challenge/Response ('C/R') email systems were developed to provide a method for validating message origination for an intended recipient. This document defines a Challenge / Response Interworking ('CRI') protocol by proposing the use of SMTP extensions and MIME headers for interoperability of C/R systems. This document also defines a set of guidelines for continued use with existing non-CRI mail systems and clients.
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)