Your mail was not delivered to some or all of its intended recipients for the following reason(s): FROM: or SENDER: inconsistent with spool file origin. --------------------RETURNED MAIL FILE-------------------- Received: by ICNUCEVM (Mailer X1.23) id 7464; Tue, 03 Mar 87 15:05:32 SET Date: Tue, 3 Mar 1987 15:05:24 SET Reply-To: "ARPA-Internet News (RFCS, ...)" <INTERNET@ICNUCEVM> Sender: "ARPA-Internet News (RFCS, ...)" <INTERNET@ICNUCEVM> From: SMTPSERV@ICNUCEVM To: Claudio Menchi <MENCHI@ICNUCEVM> Received: from SRI-NIC.ARPA by CNUCE-VM.ARPA on 02/28/87 at 22:14:23 SET Received: from C.ISI.EDU by SRI-NIC.ARPA with TCP; Fri 27 Feb 87 10:42:32-PST Date: 27 Feb 1987 10:38:34 PST Subject: RFC989 Now Available From: Ann Westine <[log in to unmask]> To: Request-For-Comments-List: ; A new Request for Comments is now available from the Network Information Center in the online library at SRI-NIC.ARPA. RFC 989: Title: Privacy Enhancement for Internet Electronics Mail: Part I: Message Encipherment and Authentication Procedures Author: John Linn Mailbox: [log in to unmask] Pages: 23 Characters: 63934 pathname: RFC:RFC989.TXT This RFC suggests a proposed protocol for the Internet community and requests discussion and suggestions for improvements. This RFC is the outgrowth of a series of IAB Privacy Task Force meetings and of internal working papers distributed for those meetings. This RFC defines message encipherment and authentication procedures, as the initial phase of an effort to provide privacy enhancement services for electronic mail transfer in the Internet. It is intended that the procedures defined here be compatible with a wide range of key management approaches, including both conventional (symmetric) and public-key (asymmetric) approaches for encryption of data encrypting keys. Use of conventional cryptography for message text encryption and/or authentication is anticipated. Privacy enhancement services (confidentiality, authentication, and message integrity assurance) are offered through the use of end-to- end cryptography between originator and recipient User Agent processes, with no special processing requirements imposed on the Message Transfer System at endpoints or at intermediate relay sites. This approach allows privacy enhancement facilities to be incorporated on a site-by-site or user-by-user basis without impact on other Internet entities. Interoperability among heterogeneous components and mail transport facilities is supported. Distribution of this memo is unlimited. Public access files may be copied from the <RFC> directory at SRI-NIC.ARPA via FTP with username ANONYMOUS and password GUEST. The normal method for distribution of RFCs is for interested parties to copy the documents from the NIC online library using FTP. Requests for special distribution should be addressed to either the author of the RFC in question or to [log in to unmask] Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. Submissions for Requests for Comments should be sent to [log in to unmask] Requests to be added to or deleted from this distribution list should be sent to [log in to unmask] --jon. -------