1PICKUP(8)                   System Manager's Manual                  PICKUP(8)
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NAME

6       pickup - Postfix local mail pickup
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SYNOPSIS

9       pickup [generic Postfix daemon options]
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DESCRIPTION

12       The  pickup(8)  daemon  waits  for hints that new mail has been dropped
13       into the maildrop directory, and feeds it into the  cleanup(8)  daemon.
14       Ill-formatted files are deleted without notifying the originator.  This
15       program expects to be run from the master(8) process manager.
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STANDARDS

18       None. The pickup(8) daemon does not interact with the outside world.
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SECURITY

21       The pickup(8) daemon is moderately security  sensitive.  It  runs  with
22       fixed  low  privilege  and can run in a chrooted environment.  However,
23       the program reads files from potentially hostile users.  The  pickup(8)
24       daemon opens no files for writing, is careful about what files it opens
25       for reading, and does not actually touch any data that is sent  to  its
26       public service endpoint.
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DIAGNOSTICS

29       Problems and transactions are logged to syslogd(8).
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BUGS

32       The  pickup(8)  daemon  copies mail from file to the cleanup(8) daemon.
33       It could avoid message copying overhead by sending  a  file  descriptor
34       instead  of  file  data, but then the already complex cleanup(8) daemon
35       would have to deal with unfiltered user data.
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CONFIGURATION PARAMETERS

38       As the pickup(8) daemon is a relatively long-running process, up to  an
39       hour  may  pass  before a main.cf change takes effect.  Use the command
40       "postfix reload" command to speed up a change.
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42       The text below provides only a parameter summary. See  postconf(5)  for
43       more details including examples.
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CONTENT INSPECTION CONTROLS

46       content_filter (empty)
47              After  the  message  is  queued,  send the entire message to the
48              specified transport:destination.
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50       receive_override_options (empty)
51              Enable or disable recipient validation, built-in content filter‐
52              ing, or address mapping.
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MISCELLANEOUS CONTROLS

55       config_directory (see 'postconf -d' output)
56              The  default  location of the Postfix main.cf and master.cf con‐
57              figuration files.
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59       ipc_timeout (3600s)
60              The time limit for sending  or  receiving  information  over  an
61              internal communication channel.
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63       line_length_limit (2048)
64              Upon  input,  long  lines  are chopped up into pieces of at most
65              this length; upon delivery, long lines are reconstructed.
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67       max_idle (100s)
68              The maximum amount of time that an idle Postfix  daemon  process
69              waits for an incoming connection before terminating voluntarily.
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71       max_use (100)
72              The maximal number of incoming connections that a Postfix daemon
73              process will service before terminating voluntarily.
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75       process_id (read-only)
76              The process ID of a Postfix command or daemon process.
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78       process_name (read-only)
79              The process name of a Postfix command or daemon process.
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81       queue_directory (see 'postconf -d' output)
82              The location of the Postfix top-level queue directory.
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84       syslog_facility (mail)
85              The syslog facility of Postfix logging.
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87       syslog_name (see 'postconf -d' output)
88              The mail system name that is prepended to the  process  name  in
89              syslog  records,  so  that  "smtpd" becomes, for example, "post‐
90              fix/smtpd".
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SEE ALSO

93       cleanup(8), message canonicalization
94       sendmail(1), Sendmail-compatible interface
95       postdrop(1), mail posting agent
96       postconf(5), configuration parameters
97       master(5), generic daemon options
98       master(8), process manager
99       syslogd(8), system logging
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LICENSE

102       The Secure Mailer license must be distributed with this software.
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AUTHOR(S)

105       Wietse Venema
106       IBM T.J. Watson Research
107       P.O. Box 704
108       Yorktown Heights, NY 10598, USA
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