masqmail
view man/masqmail.8 @ 72:ad034b57f3b2
fixed Debian bug 536060 (log files are closed after SIGHUP receival)
Explanation:
When run in daemon mode, first the log files are opened. They get
assigned to the file descriptors 3 and 4 usually. Then std{in,out,err}
are closed. When SIGHUP comes in, all open files are closes and
masqmail reexecutes itself. The new masqmail instance opens the log
files at fd 0 and 1 now, but std{in,out,err} are closed afterwards,
thus the log files are closed.
The fix is to close the log files before std{in,out,err} are closed,
in case the log files have higher fds. After std{in,out,err} were
closed, the log files get opened again, now.
See also: http://bugs.debian.org/536060
| author | meillo@marmaro.de |
|---|---|
| date | Wed, 16 Jun 2010 10:32:20 +0200 |
| parents | f0334dc87e1d |
| children | e01fed4846e4 |
line source
1 .TH masqmail 8 2010-05-07 masqmail-0.2.22 "Maintenance Commands"
3 .SH NAME
4 masqmail \- An offline Mail Transfer Agent
6 .SH SYNOPSIS
7 \fB/usr/sbin/masqmail \fR[\fB\-C \fIfile\fR] [\fB\-odq\fR] [\fB\-bd\fR] [\fB\-q\fIinterval\fR]
9 \fB/usr/sbin/masqmail \fR[\fB\-odq\fR] [\fB\-bs\fR]
11 \fB/usr/sbin/masqmail \fR[\fB\-bp\fR]
13 \fB/usr/sbin/masqmail \fR[\fB\-q\fR]
15 \fB/usr/sbin/masqmail \fR[\fB\-qo \fR[\fIname\fR]]
17 \fB/usr/sbin/masqmail \fR[\fB\-odq\fR] [\fB\-g \fR[\fIname\fR]]
19 \fB/usr/sbin/masqmail \fR[\fB\-odq\fR] [\fB\-go \fR[\fIname\fR]]
21 \fB/usr/sbin/masqmail \fR[\fB\-t\fR] [\fB\-oi\fR] [\fB\-f \fIaddress\fR] [\fB\-\-\fR] \fIaddress...
23 \fB/usr/sbin/mailq\fR
26 .SH DESCRIPTION
28 Masqmail is a mail server designed for hosts that do not have a permanent internet connection
29 e.g. a home network or a single host at home.
30 It has special support for connections to different ISPs.
31 It replaces sendmail or other MTAs such as qmail or exim.
32 It can also act as a pop3 client.
35 .SH OPTIONS
37 Since masqmail is intended to replace sendmail, it uses the same command line options,
38 but not all are implemented.
39 There are also two additional options, which are unique to masqmail
40 (\fB\-qo \fIconnection\fR and \fB\-g\fR)
42 .TP
43 \fB\-\-\fR
45 Not a `real' option, it means that all following arguments are to be understood
46 as arguments and not as options even if they begin with a leading dash `\-'.
47 Mutt is known to call sendmail with this option.
49 .TP
50 \fB\-bd\fR
52 Run as daemon, accepting connections, usually on port 25 if not configured differently.
53 This is usually used in the startup script at system boot and together with
54 the \fB\-q\fR option (see below).
56 .TP
57 \fB\-bi\fR
59 Old sendmail rebuilds its alias database when invoked with this option.
60 Masqmail ignores it.
61 Masqmail reads directly from the file given with `alias_file' in the config file.
63 .TP
64 \fB\-bp\fR
66 Show the messages in the queue. Same as calling masqmail as `mailq'.
68 .TP
69 \fB\-bs\fR
71 Accept SMTP commands from stdin.
72 Some mailers (e.g. pine) use this option as an interface.
73 It can also be used to call masqmail from inetd.
75 .TP
76 \fB\-B \fIarg\fR
78 \fIarg\fR is usually 8BITMIME.
79 Some mailers use this to indicate that the message contains characters > 127.
80 Masqmail is 8-bit clean and ignores this, so you do not have to recompile elm,
81 which is very painful ;-).
82 Note though that this violates some conventions:
83 masqmail does not convert 8 bit messages to any MIME format if it encounters
84 a mail server which does not advertise its 8BITMIME capability,
85 masqmail does not advertise this itself.
86 This is the same practice as that of exim (but different to sendmail).
88 .TP
89 \fB\-bV \fR
91 Show version information.
93 .TP
94 \fB\-C \fIfilename\fR
96 Use another configuration than \fI/etc/masqmail/masqmail.conf\fR.
97 Useful for debugging purposes.
98 If not invoked by a privileged user, masqmail will drop all privileges.
100 .TP
101 \fB\-d \fInumber\fR
103 Set the debug level.
104 This takes precedence before the value of `debug_level' in the configuration file.
105 Read the warning in the description of the latter.
107 .TP
108 \fB\-f [\fIaddress\fB]\fR
110 Set the return path address to \fIaddress\fR.
111 Only root, the user mail and anyone in group mail is allowed to do that.
113 .TP
114 \fB\-F [\fIstring\fB]\fR
116 Set the full sender name (in the From: header) to \fIstring\fR.
118 .TP
119 \fB\-g [\fIname\fB]\fR
121 Get mail (using pop3 or apop),
122 using the configurations given with get.\fIname\fR in the main configuration.
123 Without \fIname\fR, all get configurations will be used.
124 See also \fBmasqmail.get(5)\fR
126 .TP
127 \fB\-go [\fIinterval\fB] [\fIname\fB]\fR
129 Can be followed by a connection name.
130 Use this option in your script which starts as soon as a link to the internet
131 has been set up (usually ip-up).
132 When masqmail is called with this option, the specified get configuration(s)
133 is(are) read and mail will be retrieved from servers on the internet.
134 The \fIname\fR is defined in the configuration (see \fBonline_gets.\fIname\fR).
136 If called with an interval option (recognized by a digit as the first characater),
137 masqmail starts as a daemon and tries to get mail in these intervals.
138 It checks for the online status first.
139 Example: `masqmail \-go 5m' will retrieve mail every five minutes.
141 If called without \fIname\fR the online status is determined with the configured method
142 (see \fBonline_detect\fR in \fBmasqmail.conf(5)\fR).
144 .TP
145 \fB\-i\fR
147 Same as \fB\-oi\fR, see below.
149 .TP
150 \fB\-Mrm \fIlist\fR
152 Remove given messages from the queue.
153 Only allowed for privileged users.
154 The identifiers of messages are listed in the output of
155 \fImasqmail -bp\fP (\fImailq\fR).
157 .TP
158 \fB\-oem\fR
160 If the \fB\-oi\fR ist not also given, always return with a non zero return code.
161 Maybe someone tells me what this is good for...
163 .TP
164 \fB\-odb\fR
166 Deliver in background.
167 Masqmail always does this, which makes this option pretty much useless.
169 .TP
170 \fB\-odq\fR
172 Do not attempt to deliver immediately.
173 Any messages will be queued until the next queue running process picks them up and delivers them.
174 You get the same effect by setting the do_queue option in /etc/masqmail/masqmail.conf.
176 .TP
177 \fB\-oi\fR
179 A dot as a single character in a line does not terminate the message.
181 .TP
182 \fB\-q [\fIinterval\fB]\fR
184 If not given with an argument, run a queue process, i.e. try to deliver all messages in the queue.
185 Masqmail sends only to those addresses that are on the local net, not to those that are outside.
186 Use \fB\-qo\fR for those.
188 If you have configured inetd to start masqmail,
189 you can use this option in a cron job which starts in regular time intervals,
190 to mimic the same effect as starting masqmail with \fB\-bd \-q30m\fR.
192 An argument may be a time interval i.e. a numerical value followed by one of the letters.
193 s,m,h,d,w which are interpreted as seconds, minutes, hours, days or weeks respectively.
194 Example: \fB\-q30m\fR.
195 Masqmail starts as a daemon and a queue runner process will be started automatically
196 once in this time interval.
197 This is usually used together with \fB\-bd\fR (see above).
199 .TP
200 \fB\-qo [\fIname\fB]\fR
202 Can be followed by a connection name.
203 Use this option in your script which starts as soon as a link to the internet
204 has been set up (usually ip-up).
205 When masqmail is called with this option, the specified route configuration
206 is read and the queued mail with destinations on the internet will be sent.
207 The \fIname\fR is defined in the configuration (see \fBonline_routes.\fIname\fR).
209 If called without \fIname\fR the online status is determined with the configured
210 method (see \fBonline_detect\fR in \fBmasqmail.conf(5)\fR)
212 .TP
213 \fB\-t\fR
215 Read recipients from headers.
216 Delete `Bcc:' headers.
217 If any arguments are given, these are interpreted as recipient addresses
218 and the message will not be sent to these.
220 .TP
221 \fB\-v\fR
223 Log also to stdout.
224 Currently, some log messages are marked as `write to stdout' and additionally,
225 all messages with priority `LOG_ALERT' and `LOG_WARNING' will be written to stdout
226 if this option is given. It is disabled in daemon mode.
229 .SH ENVIRONMENT FOR PIPES AND MDAS
231 For security reasons, before any pipe command from an alias expansion or an mda is called,
232 the environment variables will be completely discarded and newly set up. These are:
234 SENDER, RETURN_PATH \(en the return path.
236 SENDER_DOMAIN \(en the domain part of the return path.
238 SENDER_LOCAL \(en the local part of the return path.
240 RECEIVED_HOST \(en the host the message was received from (unless local).
242 LOCAL_PART, USER, LOGNAME \(en the local part of the (original) recipient.
244 MESSAGE_ID \(en the unique message id.
245 This is not necessarily identical with the Message ID as given in the Message ID: header.
247 QUALIFY_DOMAIN \(en the domain which will be appended to unqualified addresses.
250 .SH FILES
252 \fI/etc/masqmail/masqmail.conf\fR is the main configuration for masqmail.
253 Depending on the settings in this file, you will also have other configuration
254 files in \fI/etc/masqmail/\fR.
256 \fI/var/spool/masqmail/\fR is the spool directory where masqmail stores
257 its spooled messages and the uniq pop ids.
259 \fI/var/spool/mail/\fR is the directory where locally delivered mail will be put,
260 if not configured differently in \fImasqmail.conf\fR.
262 \fI/var/log/masqmail/\fR is the directory where masqmail stores its log mesages.
263 This can also be somewhere else if configured differently by your sysadmin or the package mantainer.
266 .SH CONFORMING TO
268 RFC 821, 822, 1869, 1870, 2197, 2554 (SMTP)
270 RFC 1725, 1939 (POP3)
272 RFC 1321 (MD5)
274 RFC 2195 (CRAM-MD5)
277 .SH AUTHOR
279 Masqmail was written by Oliver Kurth.
280 It is now maintained by Markus Schnalke <meillo@marmaro.de>.
282 You will find the newest version of masqmail at \fBhttp://prog.marmaro.de/masqmail/\fR.
283 There is also a mailing list, you will find information about it at masqmail's main site.
286 .SH BUGS
288 Please report them to the mailing list.
291 .SH SEE ALSO
293 \fBmasqmail.conf(5)\fR, \fBmasqmail.route(5)\fR, \fBmasqmail.get(5)\fR, \fBmasqmail.aliases(5)\fR