PICKUP(8)                                               PICKUP(8)

NAME
       pickup - Postfix local mail pickup

SYNOPSIS
       pickup [generic Postfix daemon options]

DESCRIPTION
       The  pickup  daemon waits for hints that new mail has been
       dropped into the maildrop directory, and feeds it into the
       cleanup(8)  daemon.  Ill-formatted files are deleted with-
       out notifying the originator.  This program expects to  be
       run from the master(8) process manager.

STANDARDS
       None. The pickup daemon does not interact with the outside
       world.

SECURITY
       The pickup daemon is  moderately  security  sensitive.  It
       runs  with  fixed  low privilege and can run in a chrooted
       environment.  However, the program reads files from poten-
       tially  hostile  users.   The pickup daemon opens no files
       for writing, is careful about  what  files  it  opens  for
       reading, and does not actually touch any data that is sent
       to its public service endpoint.

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

BUGS
       The pickup daemon copies mail from file to the  cleanup(8)
       daemon.   It could avoid message copying overhead by send-
       ing a file descriptor instead of file data, but  then  the
       already  complex cleanup(8) daemon would have to deal with
       unfiltered user data.

CONFIGURATION PARAMETERS
       As the pickup(8) daemon is a relatively long-running  pro-
       cess, up to an hour may pass before a main.cf change takes
       effect.  Use the command "postfix reload" command to speed
       up a change.

       The  text  below  provides  only  a parameter summary. See
       postconf(5) for more details including examples.

CONTENT INSPECTION CONTROLS
       content_filter (empty)
              The name of a mail delivery transport that  filters
              mail after it is queued.

       receive_override_options (empty)
              Enable  or  disable  recipient validation, built-in
              content filtering, or address rewriting.

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

       daemon_timeout (18000s)
              How  much time a Postfix daemon process may take to
              handle a request  before  it  is  terminated  by  a
              built-in watchdog timer.

       ipc_timeout (3600s)
              The time limit for sending or receiving information
              over an internal communication channel.

       line_length_limit (2048)
              Upon input, long lines are chopped up  into  pieces
              of  at  most this length; upon delivery, long lines
              are reconstructed.

       max_idle (100s)
              The maximum amount of time  that  an  idle  Postfix
              daemon  process  waits for the next service request
              before exiting.

       max_use (100)
              The maximal number of connection requests before  a
              Postfix daemon process terminates.

       process_id (read-only)
              The  process ID of a Postfix command or daemon pro-
              cess.

       process_name (read-only)
              The process name of a  Postfix  command  or  daemon
              process.

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

       syslog_facility (mail)
              The syslog facility of Postfix logging.

       syslog_name (postfix)
              The mail system name that is prepended to the  pro-
              cess  name  in  syslog  records,  so  that  "smtpd"
              becomes, for example, "postfix/smtpd".

SEE ALSO
       cleanup(8), message canonicalization
       sendmail(1), Sendmail-compatible interface
       postdrop(1), mail posting agent
       postconf(5), configuration parameters
       master(8), process manager
       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

                                                        PICKUP(8)