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 outside 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 potentially
       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  overhead 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)
              After   the   message   is  queued,  send  the  entire  message  to  the  specified
              transport:destination.

       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.

       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 an
              incoming connection before terminating voluntarily.

       max_use (100)
              The maximal number of incoming connections  that  a  Postfix  daemon  process  will
              service before terminating voluntarily.

       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 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".

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(8postfix)