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+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)aliases.5	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt ALIASES 5
+.Os BSD 4
+.Sh NAME
+.Nm aliases
+.Nd aliases file for sendmail
+.Sh SYNOPSIS
+.Nm aliases
+.Sh DESCRIPTION
+This file describes user
+.Tn ID
+aliases used by
+.Pa /usr/sbin/sendmail .
+The file resides in
+.Pa /etc
+and
+is formatted as a series of lines of the form
+.Bd -filled -offset indent
+name: name_1, name2, name_3, . . .
+.Ed
+.Pp
+The
+.Em name
+is the name to alias, and the
+.Em name_n
+are the aliases for that name.
+Lines beginning with white space are continuation lines.
+Lines beginning with
+.Ql #
+are comments.
+.Pp
+Aliasing occurs only on local names.
+Loops can not occur, since no message will be sent to any person more than once.
+.Pp
+After aliasing has been done, local and valid recipients who have a
+.Dq Pa .forward
+file in their home directory have messages forwarded to the
+list of users defined in that file.
+.Pp
+This is only the raw data file; the actual aliasing information is
+placed into a binary format in the file
+.Pa /etc/aliases.db
+using the program
+.Xr newaliases 1 .
+A
+.Xr newaliases
+command should be executed each time the aliases file is changed for the
+change to take effect.
+.Sh SEE  ALSO
+.Xr newaliases 1 ,
+.Xr dbopen 3 ,
+.Xr dbm 3 ,
+.Xr sendmail 8
+.Rs
+.%T "SENDMAIL Installation and Operation Guide"
+.Re
+.Rs
+.%T "SENDMAIL An Internetwork Mail Router"
+.Re
+.Sh BUGS
+If you have compiled
+.Xr sendmail
+with DBM support instead of NEWDB,
+you may have encountered problems in
+.Xr dbm 3
+restricting a single alias to about 1000 bytes of information.
+You can get longer aliases by ``chaining''; that is, make the last name in
+the alias be a dummy name which is a continuation alias.
+.Sh HISTORY
+The
+.Nm
+file format appeared in
+.Bx 4.0 .