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diff --git a/doc/rfc/rfc2142.txt b/doc/rfc/rfc2142.txt new file mode 100644 index 0000000..7404f7b --- /dev/null +++ b/doc/rfc/rfc2142.txt @@ -0,0 +1,339 @@ + + + + + + +Network Working Group D. Crocker +Request for Comments: 2142 Internet Mail Consortium +Category: Standards Track May 1997 + + + MAILBOX NAMES FOR + COMMON SERVICES, ROLES AND FUNCTIONS + +Status of this Memo + + 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. + +ABSTRACT + + This specification enumerates and describes Internet mail addresses + (mailbox name @ host reference) to be used when contacting personnel + at an organization. Mailbox names are provided for both operations + and business functions. Additional mailbox names and aliases are not + prohibited, but organizations which support email exchanges with the + Internet are encouraged to support AT LEAST each mailbox name for + which the associated function exists within the organization. + +1. RATIONALE AND SCOPE + + Various Internet documents have specified mailbox names to be used + when reaching the operators of the new service; for example, [RFC822 + 6.3, C.6] requires the presence of a <POSTMASTER@domain> mailbox name + on all hosts that have an SMTP server. Other protocols have defacto + standards for well known mailbox names, such as <USENET@domain> for + NNTP (see [RFC977]), and <WEBMASTER@domain> for HTTP (see [HTTP]). + Defacto standards also exist for well known mailbox names which have + nothing to do with a particular protocol, e.g., <ABUSE@domain> and + <TROUBLE@domain>. + + The purpose of this memo is to aggregate and specify the basic set of + mailbox names which organizations need to support. Most + organizations do not need to support the full set of mailbox names + defined here, since not every organization will implement the all of + the associated services. However, if a given service is offerred, + then the associated mailbox name(es) must be supported, resulting in + delivery to a recipient appropriate for the referenced service or + role. + + + + + +Crocker Standards Track [Page 1] + +RFC 2142 Mailbox Names May 1997 + + + If a host is not configured to accept mail directly, but it + implements a service for which this specification defines a mailbox + name, that host must have an MX RR set (see [RFC974]) and the mail + exchangers specified by this RR set must recognize the referenced + host's domain name as "local" for the purpose of accepting mail bound + for the defined mailbox name. Note that this is true even if the + advertised domain name is not the same as the host's domain name; for + example, if an NNTP server's host name is DATA.RAMONA.VIX.COM yet it + advertises the domain name VIX.COM in its "Path:" headers, then mail + must be deliverable to both <USENET@VIX.COM> and + <USENET@DATA.RAMONA.VIX.COM>, even though these addresses might be + delivered to different final destinations. + + The scope of a well known mailbox name is its domain name. Servers + accepting mail on behalf of a domain must accept and correctly + process mailbox names for that domain, even if the server, itself, + does not support the associated service. So, for example, if an NNTP + server advertises the organization's top level domain in "Path:" + headers (see [RFC977]) the mail exchangers for that top level domain + must accept mail to <USENET@domain> even if the mail exchanger hosts + do not, themselves, serve the NNTP protocol. + +2. INVARIANTS + + For well known names that are not related to specific protocols, only + the organization's top level domain name are required to be valid. + For example, if an Internet service provider's domain name is + COMPANY.COM, then the <ABUSE@COMPANY.COM> address must be valid and + supported, even though the customers whose activity generates + complaints use hosts with more specific domain names like + SHELL1.COMPANY.COM. Note, however, that it is valid and encouraged + to support mailbox names for sub-domains, as appropriate. + + Mailbox names must be recognized independent of character case. For + example, POSTMASTER, postmaster, Postmaster, PostMaster, and even + PoStMaStEr are to be treated the same, with delivery to the same + mailbox. + + Implementations of these well known names need to take account of the + expectations of the senders who will use them. Sending back an + automatic mail acknowledgement is usually helpful (though we suggest + caution against the possibility of "duelling mail robots" and the + resulting mail loops). + + + + + + + + +Crocker Standards Track [Page 2] + +RFC 2142 Mailbox Names May 1997 + + +3. BUSINESS-RELATED MAILBOX NAMES + + These names are related to an organization's line-of-business + activities. The INFO name is often tied to an autoresponder, with a + range of standard files available. + + MAILBOX AREA USAGE + ----------- ---------------- --------------------------- + INFO Marketing Packaged information about the + organization, products, and/or + services, as appropriate + MARKETING Marketing Product marketing and + marketing communications + SALES Sales Product purchase information + SUPPORT Customer Service Problems with product or + service + + +4. NETWORK OPERATIONS MAILBOX NAMES + + Operations addresses are intended to provide recourse for customers, + providers and others who are experiencing difficulties with the + organization's Internet service. + + MAILBOX AREA USAGE + ----------- ---------------- --------------------------- + ABUSE Customer Relations Inappropriate public behaviour + NOC Network Operations Network infrastructure + SECURITY Network Security Security bulletins or queries + + +5. SUPPORT MAILBOX NAMES FOR SPECIFIC INTERNET SERVICES + + For major Internet protocol services, there is a mailbox defined for + receiving queries and reports. (Synonyms are included, here, due to + their extensive installed base.) + + MAILBOX SERVICE SPECIFICATIONS + ----------- ---------------- --------------------------- + POSTMASTER SMTP [RFC821], [RFC822] + HOSTMASTER DNS [RFC1033-RFC1035] + USENET NNTP [RFC977] + NEWS NNTP Synonym for USENET + WEBMASTER HTTP [RFC 2068] + WWW HTTP Synonym for WEBMASTER + UUCP UUCP [RFC976] + FTP FTP [RFC959] + + + + +Crocker Standards Track [Page 3] + +RFC 2142 Mailbox Names May 1997 + + +6. MAILING LIST ADMINISTRATION MAILBOX + + Mailing lists have an administrative mailbox name to which add/drop + requests and other meta-queries can be sent. + + For a mailing list whose submission mailbox name is: + + <LIST@DOMAIN> + + there MUST be the administrative mailbox name: + + <LIST-REQUEST@DOMAIN> + + Distribution List management software, such as MajorDomo and + Listserv, also have a single mailbox name associated with the + software on that system -- usually the name of the software -- rather + than a particular list on that system. Use of such mailbox names + requires participants to know the type of list software employed at + the site. This is problematic. Consequently: + + LIST-SPECIFIC (-REQUEST) MAILBOX NAMES ARE REQUIRED, + INDEPENDENT OF THE AVAILABILITY OF GENERIC LIST SOFTWARE + MAILBOX NAMES. + +7. DOMAIN NAME SERVICE ADMINISTRATION MAILBOX + + In DNS (see [RFC1033], [RFC1034] and [RFC1035]), the Start Of + Authority record (SOA RR) has a field for specifying the mailbox name + of the zone's administrator. + + This field must be a simple word without metacharacters (such as "%" + or "!" or "::"), and a mail alias should be used on the relevant mail + exchanger hosts to direct zone administration mail to the appropriate + mailbox. + + For simplicity and regularity, it is strongly recommended that the + well known mailbox name HOSTMASTER always be used + <HOSTMASTER@domain>. + + + + + + + + + + + + + +Crocker Standards Track [Page 4] + +RFC 2142 Mailbox Names May 1997 + + +8. AUTONOMOUS SYSTEM MAILBOX + + Several Internet registries implement mailing lists for Autonomous + System contacts. So, for example, mail sent to <AS3557@RA.NET> will + at the time of this writing reach the technical contact for + Autonomous System 3557 in the BGP4 (see [RFC1654], [RFC1655] and + [RFC1656]). + + Not all Autonomous Systems are registered with all registries, + however, and so undeliverable mailbox names under this scheme should + be treated as an inconvenience rather than as an error or a standards + violation. + +9. SECURITY CONSIDERATIONS + + Denial of service attacks (flooding a mailbox with junk) will be + easier after this document becomes a standard, since more systems + will support the same set of mailbox names. + +10. REFERENCES + + [RFC821] Postel, J., "Simple Mail Transfer Protocol", STD 10, RFC + 821, Information Sciences Institute, August 1982. + + [RFC822] Crocker, D., "Standard for the format of ARPA Internet text + messages", STD 11, RFC 822, University of Delaware, August 1982. + + [RFC959] Postel, J., and J. Reynolds, "File Transfer Protocol (FTP)", + STD 9, RFC 959, Information Sciences Institute, October 1985. + + [RFC974] Partridge, C., "Mail routing and the domain system", STD 14, + RFC 974, CSNET CIC BBN Laboratories Inc, January 1986. + + [RFC976] Horton, M., "UUCP mail interchange format standard", RFC + 976, Bell Laboratories, February 1986. + + [RFC977] Kantor, B., et al, "Network News Transfer Protocol: A + Proposed Standard for the Stream-Based Transmission of News", RFC + 977, University of California, February 1986. + + [RFC1033] Lottor, M., "Domain administrators operations guide", RFC + 1033, SRI International, November 1987. + + [RFC1034] Mockapetris, P., "Domain names - concepts and facilities", + STD 13, RFC 1035, USC/Information Sciences Institute, November 1987. + + + + + + +Crocker Standards Track [Page 5] + +RFC 2142 Mailbox Names May 1997 + + + [RFC1035] Mockapetris, P., "Domain Names - Implementation and + Specification" STD 13, RFC 1035, USC/Information Sciences Institute, + November 1987. + + [RFC1654] Rekhter, Y., et al, "A Border Gateway Protocol 4 (BGP- 4)", + RFC 1654, T.J. Watson Research Center, IBM Corp., July 1994. + + [RFC1655] Rekhter, Y., et al, "Application of the Border Gateway + Protocol in the Internet", RFC 1655, T.J. Watson Research Center, IBM + Corp., July 1994. + + [RFC1656] Traina, P., "BGP-4 Protocol Document Roadmap and + Implementation Experience", RFC 1656, cisco Systems, July 1994. + + [HTTP] Berners-Lee, T., et al, "Hypertext Transfer Protocol -- + HTTP/1.0", RFC 1945, May 1996. + +11. ACKNOWLEDGEMENTS + + This specification derived from an earlier draft written by Paul + Vixie. Thanks to Stan Barber, Michael Dillon, James Aldridge, J. D. + Falk, Peter Kaminski, Brett Watson, Russ Wright, Neal McBurnett, and + Ed Morin for their comments on that draft. + +12. AUTHOR'S ADDRESS + + Dave Crocker + Internet Mail Consortium + 127 Segre Ave. + Santa Cruz, CA + + Phone: +1 408 246 8253 + EMail: dcrocker@imc.org + + + + + + + + + + + + + + + + + + +Crocker Standards Track [Page 6] + |