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diff --git a/man7/mailaddr.7 b/man7/mailaddr.7 new file mode 100644 index 0000000..8218daa --- /dev/null +++ b/man7/mailaddr.7 @@ -0,0 +1,134 @@ +.\" Copyright (c) 1983, 1987 The Regents of the University of California. +.\" All rights reserved. +.\" +.\" @(#)mailaddr.7 6.5 (Berkeley) 2/14/89 +.\" +.\" Extensively rewritten by Arnt Gulbrandsen <agulbra@troll.no>. My +.\" changes are placed under the same copyright as the original BSD page. +.\" +.\" Adjusted by Arnt Gulbrandsen <arnt@gulbrandsen.priv.no> in 2004 to +.\" account for changes since 1995. Route-addrs are now even less +.\" common, etc. Some minor wording improvements. Same copyright. +.\" +.\" %%%LICENSE_START(PERMISSIVE_MISC) +.\" Redistribution and use in source and binary forms are permitted +.\" provided that the above copyright notice and this paragraph are +.\" duplicated in all such forms and that any documentation, +.\" advertising materials, and other materials related to such +.\" distribution and use acknowledge that the software was developed +.\" by the University of California, Berkeley. The name of the +.\" University may not be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED +.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +.\" %%%LICENSE_END +.\" +.TH mailaddr 7 2023-02-05 "Linux man-pages 6.05.01" +.UC 5 +.SH NAME +mailaddr \- mail addressing description +.SH DESCRIPTION +.nh +This manual page gives a brief introduction to SMTP mail addresses, +as used on the Internet. +These addresses are in the general format +.PP +.in +4n +.EX +user@domain +.EE +.in +.PP +where a domain is a hierarchical dot-separated list of subdomains. +These examples are valid forms of the same address: +.PP +.in +4n +.EX +john.doe@monet.example.com +John Doe <john.doe@monet.example.com> +john.doe@monet.example.com (John Doe) +.EE +.in +.PP +The domain part ("monet.example.com") is a mail-accepting domain. +It can be a host and in the past it usually was, but it doesn't have to be. +The domain part is not case sensitive. +.PP +The local part ("john.doe") is often a username, +but its meaning is defined by the local software. +Sometimes it is case sensitive, +although that is unusual. +If you see a local-part that looks like garbage, +it is usually because of a gateway between an internal e-mail +system and the net, here are some examples: +.PP +.in +4n +.EX +"surname/admd=telemail/c=us/o=hp/prmd=hp"@some.where +USER%SOMETHING@some.where +machine!machine!name@some.where +I2461572@some.where +.EE +.in +.PP +(These are, respectively, an X.400 gateway, a gateway to an arbitrary +internal mail system that lacks proper internet support, an UUCP +gateway, and the last one is just boring username policy.) +.PP +The real-name part ("John Doe") can either be placed before +<>, or in () at the end. +(Strictly speaking the two aren't the same, +but the difference is beyond the scope of this page.) +The name may have to be quoted using "", for example, if it contains ".": +.PP +.in +4n +.EX +"John Q. Doe" <john.doe@monet.example.com> +.EE +.in +.SS Abbreviation +Some mail systems let users abbreviate the domain name. +For instance, +users at example.com may get away with "john.doe@monet" to +send mail to John Doe. +.I This behavior is deprecated. +Sometimes it works, but you should not depend on it. +.SS Route-addrs +In the past, sometimes one had to route a message through +several hosts to get it to its final destination. +Addresses which show these relays are termed "route-addrs". +These use the syntax: +.PP +.in +4n +.EX +<@hosta,@hostb:user@hostc> +.EE +.in +.PP +This specifies that the message should be sent to hosta, +from there to hostb, and finally to hostc. +Many hosts disregard route-addrs and send directly to hostc. +.PP +Route-addrs are very unusual now. +They occur sometimes in old mail archives. +It is generally possible to ignore all but the "user@hostc" +part of the address to determine the actual address. +.SS Postmaster +Every site is required to have a user or user alias designated +"postmaster" to which problems with the mail system may be +addressed. +The "postmaster" address is not case sensitive. +.SH FILES +.I /etc/aliases +.br +.I \[ti]/.forward +.SH SEE ALSO +.BR mail (1), +.BR aliases (5), +.BR forward (5), +.BR sendmail (8) +.PP +.UR http://www.ietf.org\:/rfc\:/rfc5322.txt +IETF RFC\ 5322 +.UE |