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) or postlogd(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 (in the case of sendmail(1), with the "-C" option),  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  privileged  Postfix  process  will  import from a
              non-Postfix parent process, or name=value environment overrides.

       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)
              A prefix that is prepended to the process name in syslog records, so that,  for  example,  "smtpd"
              becomes "prefix/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).

       Available in Postfix version 3.6 and later:

       local_login_sender_maps (static:*)
              A  list  of  lookup  tables  that  are  searched by the UNIX login name, and that return a list of
              allowed envelope sender patterns separated by space or comma.

       empty_address_local_login_sender_maps_lookup_key (<>)
              The lookup key to be used in local_login_sender_maps tables, instead of the null sender address.

       recipient_delimiter (empty)
              The set of characters that can separate an email address localpart, user name, or a .forward  file
              name from its extension.

FILES

       /var/spool/postfix/maildrop, maildrop queue

SEE ALSO

       sendmail(1), compatibility interface
       postconf(5), configuration parameters
       postlogd(8), Postfix logging
       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)