    POSTDROP(1)                                                        POSTDROP(1)

    NAME
           postdrop - Postfix mail posting utility

    SYNOPSIS
           postdrop [-rv] [-c config_dir]

    DESCRIPTION
           The  postdrop(1)  command  creates a file in the maildrop directory and
           copies its standard input to the file.

           Options:

           -c config_dir
                  The main.cf configuration file is in the named directory instead
                  of the default configuration directory. See also the MAIL_CONFIG
                  environment setting below.

           -r     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.

           -v     Enable verbose  logging  for  debugging  purposes.  Multiple  -v
                  options  make  the  software increasingly verbose. As of Postfix
                  2.3, this option is available for the super-user only.

    SECURITY
           The command is designed to run with set-group ID privileges, so that it
           can write to the maildrop queue directory and so that it can connect to
           Postfix daemon processes.

    DIAGNOSTICS
           Fatal errors: malformed input, I/O error, out of memory.  Problems  are
           logged  to syslogd(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.

    ENVIRONMENT
           MAIL_CONFIG
                  Directory  with the main.cf file. In order to avoid exploitation
                  of set-group ID privileges, a non-standard directory is  allowed
                  only if:

                  o      The  name is listed in the standard main.cf file with the
                         alternate_config_directories configuration parameter.

                  o      The command is invoked by the super-user.

    CONFIGURATION PARAMETERS
           The following main.cf parameters are especially relevant to  this  pro-
           gram.   The  text  below  provides  only a parameter summary. See post-
           conf(5) for more details including examples.

           alternate_config_directories (empty)
                  A list of non-default Postfix configuration directories that may
                  be  specified with "-c config_directory" on the command line, or
                  via the MAIL_CONFIG environment parameter.

           config_directory (see 'postconf -d' output)
                  The default location of the Postfix main.cf and  master.cf  con-
                  figuration files.

           import_environment (see 'postconf -d' output)
                  The  list  of environment parameters that a Postfix process will
                  import from a non-Postfix parent process.

           queue_directory (see 'postconf -d' output)
                  The location of the Postfix top-level queue directory.

           syslog_facility (mail)
                  The syslog facility of Postfix logging.

           syslog_name (see 'postconf -d' output)
                  The mail system name that is prepended to the  process  name  in
                  syslog  records,  so  that  "smtpd" becomes, for example, "post-
                  fix/smtpd".

           trigger_timeout (10s)
                  The time limit for sending a trigger to a  Postfix  daemon  (for
                  example, the pickup(8) or qmgr(8) daemon).

           Available in Postfix version 2.2 and later:

           authorized_submit_users (static:anyone)
                  List  of  users who are authorized to submit mail with the send-
                  mail(1) command (and with the privileged postdrop(1) helper com-
                  mand).

    FILES
           /var/spool/postfix/maildrop, maildrop queue

    SEE ALSO
           sendmail(1), compatibility interface
           postconf(5), configuration parameters
           syslogd(8), system logging

    LICENSE
           The Secure Mailer license must be distributed with this software.

    AUTHOR(S)
           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)