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:

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

              •      The command is invoked by the super-user.

CONFIGURATION PARAMETERS

       The following main.cf parameters are especially relevant to this program.  The text  below
       provides only a parameter summary. See postconf(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 configuration 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, "postfix/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 sendmail(1)  command  (and
              with the privileged postdrop(1) helper command).

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

                                                                                      POSTDROP(1)