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.\" $OpenBSD: aliases.5,v 1.1 2012/09/12 17:53:32 gilles Exp $
.\"
.\" Copyright (c) 2012 Gilles Chehade <gilles@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: September 12 2012 $
.Dt ALIASES 5
.Os
.Sh NAME
.Nm aliases
.Nd aliases file for smtpd
.Sh SYNOPSIS
.Nm aliases
.Sh DESCRIPTION
This file describes the format of the
.Nm
file used by
.Xr smtpd 8 .
The file is located in
.Pa /etc/mail
and consists of key/values mappings of the form:
.Bd -filled -offset indent
key: value1, value2, value3, ...
.Ed
.Pp
.Em key
is the user-part to expand into the corresponding values.
Each value can be another alias, a username, a filename,
a command, an include file, or an external address.
.Bl -tag -width Ds
.It Em username
The username must be available via
.Xr getpwnam 3 .
.It Em filename
/path/to/filename
.Pp
Messages are appended to the file specified by the absolute pathname.
.It Em command
|command
.Pp
A command starts with a pipe and receives the message on its
standard input.
.It Em include file
:include:/path/to/filename
.Pp
Values in filename are added as aliases for
.Em key .
The file format consists of one value per line,
each value being any of those described in this man page.
.It Em external address
user-part@domain-part
.Pp
An email address in RFC 5322 format.
.El
.Pp
.Ql #
is a comment delimiter; anything placed after it is discarded.
.Pp
Aliasing is done under the privileges of the daemon's unprivileged
account.
This should be kept in mind when aliasing a command.
.Sh SEE ALSO
.Xr smtpd.conf 5 ,
.Xr makemap 8 ,
.Xr newaliases 8 ,
.Xr smtpd 8
.Sh HISTORY
The
.Nm
file format appeared in
.Bx 4.0 .
|
