PICKUP(8)		    System Manager's Manual		     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 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)
	      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 filter-
	      ing, or address mapping.

MISCELLANEOUS CONTROLS
       config_directory (see 'postconf -d' output)
	      The  default  location of the Postfix main.cf and master.cf con-
	      figuration 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, "post-
	      fix/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



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