A new Request for Comments is now available in online RFC libraries. RFC 1648: Title: Postmaster Convention for X.400 Operations Author: A. Cargille Mailbox: cargille@cs.wisc.edu Pages: 4 Characters: 8,761 Updates/Obsoletes: none Both STD 11, RFC 822 and STD 3, RFC 1123 (Host Requirements) require that the email address "postmaster" be supported at all hosts. This paper extends this concept to X.400 mail domains which have registered RFC 1327 mapping rules, and which therefore appear to have normal RFC822-style addresses. This RFC is the product of the X.400 Operations Working Group of the IETF. This is now a Proposed Standard Protocol. This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF list and the RFC-DIST list. Requests to be added to or deleted from the IETF distribution list should be sent to IETF-REQUEST@CNRI.RESTON.VA.US. Requests to be added to or deleted from the RFC-DIST distribution list should be sent to RFC-REQUEST@NIC.DDN.MIL. Details on obtaining RFCs via FTP or EMAIL may be obtained by sending an EMAIL message to rfc-info@ISI.EDU with the message body help: ways_to_get_rfcs. For example: To: rfc-info@ISI.EDU Subject: getting rfcs help: ways_to_get_rfcs Requests for special distribution should be addressed to either the author of the RFC in question, or to admin@DS.INTERNIC.NET. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. Submissions for Requests for Comments should be sent to RFC-EDITOR@ISI.EDU. Please consult RFC 1543, Instructions to RFC Authors, for further information. Joyce K. Reynolds USC/Information Sciences Institute