/usr/share/doc/postfix/html/postdrop.1.html is in postfix-doc 3.1.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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  | <!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html> <head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<title> Postfix manual - postdrop(1) </title>
</head> <body> <pre>
POSTDROP(1)                                                        POSTDROP(1)
<b>NAME</b>
       postdrop - Postfix mail posting utility
<b>SYNOPSIS</b>
       <b>postdrop</b> [<b>-rv</b>] [<b>-c</b> <i>config</i><b>_</b><i>dir</i>]
<b>DESCRIPTION</b>
       The  <a href="postdrop.1.html"><b>postdrop</b>(1)</a>  command  creates a file in the <b>maildrop</b> directory and
       copies its standard input to the file.
       Options:
       <b>-c</b> <i>config</i><b>_</b><i>dir</i>
              The <a href="postconf.5.html"><b>main.cf</b></a> configuration file is in the named directory instead
              of the default configuration directory. See also the MAIL_CONFIG
              environment setting below.
       <b>-r</b>     Use a Postfix-internal protocol for  reading  the  message  from
              standard input, and for reporting status information on standard
              output. This is currently the only supported method.
       <b>-v</b>     Enable verbose  logging  for  debugging  purposes.  Multiple  <b>-v</b>
              options  make  the  software increasingly verbose. As of Postfix
              2.3, this option is available for the super-user only.
<b>SECURITY</b>
       The command is designed to run with set-group ID privileges, so that it
       can write to the <b>maildrop</b> queue directory and so that it can connect to
       Postfix daemon processes.
<b>DIAGNOSTICS</b>
       Fatal errors: malformed input, I/O error, out of memory.  Problems  are
       logged  to <b>syslogd</b>(8) and to the standard error stream.  When the input
       is incomplete, or when the process receives a HUP, INT,  QUIT  or  TERM
       signal, the queue file is deleted.
<b>ENVIRONMENT</b>
       MAIL_CONFIG
              Directory  with the <a href="postconf.5.html"><b>main.cf</b></a> file. In order to avoid exploitation
              of set-group ID privileges, a non-standard directory is  allowed
              only if:
              <b>o</b>      The  name is listed in the standard <a href="postconf.5.html"><b>main.cf</b></a> file with the
                     <b><a href="postconf.5.html#alternate_config_directories">alternate_config_directories</a></b> configuration parameter.
              <b>o</b>      The command is invoked by the super-user.
<b>CONFIGURATION PARAMETERS</b>
       The following <a href="postconf.5.html"><b>main.cf</b></a> parameters are especially relevant to  this  pro-
       gram.   The  text  below  provides  only a parameter summary. See <a href="postconf.5.html"><b>post-</b></a>
       <a href="postconf.5.html"><b>conf</b>(5)</a> for more details including examples.
       <b><a href="postconf.5.html#alternate_config_directories">alternate_config_directories</a> (empty)</b>
              A list of non-default Postfix configuration directories that may
              be  specified with "-c <a href="postconf.5.html#config_directory">config_directory</a>" on the command line, or
              via the MAIL_CONFIG environment parameter.
       <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
              The default location of the Postfix <a href="postconf.5.html">main.cf</a> and  <a href="master.5.html">master.cf</a>  con-
              figuration files.
       <b><a href="postconf.5.html#import_environment">import_environment</a> (see 'postconf -d' output)</b>
              The  list  of environment parameters that a Postfix process will
              import from a non-Postfix parent process.
       <b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b>
              The location of the Postfix top-level queue directory.
       <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b>
              The syslog facility of Postfix logging.
       <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b>
              The mail system name that is prepended to the  process  name  in
              syslog  records,  so  that  "smtpd" becomes, for example, "post-
              fix/smtpd".
       <b><a href="postconf.5.html#trigger_timeout">trigger_timeout</a> (10s)</b>
              The time limit for sending a trigger to a  Postfix  daemon  (for
              example, the <a href="pickup.8.html"><b>pickup</b>(8)</a> or <a href="qmgr.8.html"><b>qmgr</b>(8)</a> daemon).
       Available in Postfix version 2.2 and later:
       <b><a href="postconf.5.html#authorized_submit_users">authorized_submit_users</a> (<a href="DATABASE_README.html#types">static</a>:anyone)</b>
              List  of  users who are authorized to submit mail with the <a href="sendmail.1.html"><b>send-</b></a>
              <a href="sendmail.1.html"><b>mail</b>(1)</a> command (and with the privileged <a href="postdrop.1.html"><b>postdrop</b>(1)</a> helper com-
              mand).
<b>FILES</b>
       /var/spool/postfix/<a href="QSHAPE_README.html#maildrop_queue">maildrop</a>, <a href="QSHAPE_README.html#maildrop_queue">maildrop queue</a>
<b>SEE ALSO</b>
       <a href="sendmail.1.html">sendmail(1)</a>, compatibility interface
       <a href="postconf.5.html">postconf(5)</a>, configuration parameters
       syslogd(8), system logging
<b>LICENSE</b>
       The Secure Mailer license must be distributed with this software.
<b>AUTHOR(S)</b>
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA
       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA
                                                                   POSTDROP(1)
</pre> </body> </html>
 |