1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
.\" $OpenBSD: mail.local.8,v 1.32 2020/05/27 03:12:06 millert Exp $
.\" Copyright (c) 1990 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. 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.
.\"
.\" from: @(#)mail.local.8 6.8 (Berkeley) 4/27/91
.\"
.Dd $Mdocdate: May 27 2020 $
.Dt MAIL.LOCAL 8
.Os
.Sh NAME
.Nm mail.local
.Nd store mail in a mailbox
.Sh SYNOPSIS
.Nm mail.local
.Op Fl Ll
.Op Fl f Ar from
.Ar user ...
.Sh DESCRIPTION
.Nm
reads the standard input up to an end-of-file and appends it to each
.Ar user Ns 's
.Pa mail
file.
The
.Ar user
must be a valid user name.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl f Ar from
Specify the sender's name.
.It Fl L
Don't create a
.Pa username.lock
file while locking the spool.
.It Fl l
For compatibility, request that files named
.Pa username.lock
be used for locking.
(This is the default behavior.)
.El
.Pp
Individual mail messages in the mailbox are delimited by an empty
line followed by a line beginning with the string
.Dq "From\&\ " .
A line containing the string
.Dq "From\&\ " ,
the sender's name and a timestamp is prepended to each delivered mail message.
A blank line is appended to each message.
A greater-than character
.Pq Ql >
is prepended to any line in the message which could be mistaken for a
.Dq "From\&\ "
delimiter line.
.Pp
Significant effort has been made to ensure that
.Nm
acts as securely as possible.
It will only deliver to a mail spool directory that is not world-writable.
The default mode of
.Pa /var/mail
on
.Ox
is 755, which prevents non-root processes from creating mail spool files.
The MTA is expected to either create the mail spool file itself, or call
.Nm
as root.
.Pp
The mailbox is always locked using
.Xr flock 2
while mail is appended.
Unless the
.Fl L
flag is specified, a
.Pa username.lock
file is also used.
.Pp
If the
.Xr biff 1
service is returned by
.Xr getservbyname 3 ,
the biff server is notified of delivered mail.
.Sh ENVIRONMENT
.Bl -tag -width indent
.It Ev TZ
Used to set the appropriate time zone on the timestamp.
.El
.Sh FILES
.Bl -tag -width /tmp/local.XXXXXXXXXX -compact
.It Pa /tmp/local.XXXXXXXXXX
temporary files
.It Pa /var/mail/user
user's mailbox directory
.El
.Sh EXIT STATUS
.Ex -std mail.local
.Sh SEE ALSO
.Xr biff 1 ,
.Xr mail 1 ,
.Xr flock 2 ,
.Xr getservbyname 3 ,
.Xr comsat 8 ,
.Xr smtpd 8
.Sh HISTORY
A superset of
.Nm
(handling mailbox reading as well as mail delivery) appeared in
.At v7
as the program
.Xr mail 1 .
.Sh BUGS
Using quotas in
.Pa /var/mail
can be problematic if using
.Xr sendmail 8
as an MTA,
since it asks
.Nm
to deliver a message to multiple recipients if possible.
This causes problems in a quota environment since a message may be
delivered to some users but not others due to disk quotas.
Even though the message was delivered to some of the recipients,
.Nm
will exit with an exit code > 0, causing
.Xr sendmail 8
to attempt redelivery later.
That means that some users will keep getting the same message every time
.Xr sendmail 8
runs its queue.
This problem does not exist for
.Xr smtpd 8
users.
.Pp
If you are running
.Xr sendmail 8
and have disk quotas on
.Pa /var/mail
it is imperative that you unset the
.Dq m
mailer flag for the
.Sq local
mailer.
To do this, locate the line beginning with
.Dq Mlocal
in
.Pa /etc/mail/sendmail.cf
and remove the
.Dq m
from the flags section, denoted by
.Dq F= .
Alternately, you can override the default mailer flags by adding the line:
.Pp
.Dl define(`LOCAL_MAILER_FLAGS', `rn9S')dnl
.Pp
to your
.Dq \.mc
file (this is the source file that is used to generate
.Pa /etc/mail/sendmail.cf ) .
|
