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PICKUP(8)                                                            PICKUP(8)

NAME
       pickup - Postfix local mail pickup

SYNOPSIS
       pickup [generic Postfix daemon options]

DESCRIPTION
       The  pickup(8)  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 without notifying the  originator.   This  program
       expects to be run from the master(8) process manager.

STANDARDS
       None. The pickup(8) daemon does not interact with the out-
       side world.

SECURITY
       The pickup(8) 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(8) 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(8)  daemon  copies  mail  from  file  to   the
       cleanup(8)  daemon.   It could avoid message copying over-
       head by sending 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
       process,  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 mapping.

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
              process.

       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
              process  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(5), generic daemon options
       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)