1PICKUP(8) System Manager's Manual PICKUP(8)
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6 pickup - Postfix local mail pickup
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9 pickup [generic Postfix daemon options]
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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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18 None. The pickup(8) daemon does not interact with the outside world.
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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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29 Problems and transactions are logged to syslogd(8).
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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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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.
41 The text below provides only a parameter summary. See postconf(5) for
43 more details including examples.
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46 content_filter (empty)
47 The name of a mail delivery transport that filters mail after it
48 is queued.
49 receive_override_options (empty)
51 Enable or disable recipient validation, built-in content filter‐
52 ing, or address mapping.
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55 config_directory (see 'postconf -d' output)
56 The default location of the Postfix main.cf and master.cf con‐
57 figuration files.
58 daemon_timeout (18000s)
60 How much time a Postfix daemon process may take to handle a
61 request before it is terminated by a built-in watchdog timer.
62 ipc_timeout (3600s)
64 The time limit for sending or receiving information over an
65 internal communication channel.
66 line_length_limit (2048)
68 Upon input, long lines are chopped up into pieces of at most
69 this length; upon delivery, long lines are reconstructed.
70 max_idle (100s)
72 The maximum amount of time that an idle Postfix daemon process
73 waits for an incoming connection before terminating voluntarily.
74 max_use (100)
76 The maximal number of incoming connections that a Postfix daemon
77 process will service before terminating voluntarily.
78 process_id (read-only)
80 The process ID of a Postfix command or daemon process.
81 process_name (read-only)
83 The process name of a Postfix command or daemon process.
84 queue_directory (see 'postconf -d' output)
86 The location of the Postfix top-level queue directory.
87 syslog_facility (mail)
89 The syslog facility of Postfix logging.
90 syslog_name (postfix)
92 The mail system name that is prepended to the process name in
93 syslog records, so that "smtpd" becomes, for example, "post‐
94 fix/smtpd".
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97 cleanup(8), message canonicalization
98 sendmail(1), Sendmail-compatible interface
99 postdrop(1), mail posting agent
100 postconf(5), configuration parameters
101 master(5), generic daemon options
102 master(8), process manager
103 syslogd(8), system logging
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106 The Secure Mailer license must be distributed with this software.
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109 Wietse Venema
110 IBM T.J. Watson Research
111 P.O. Box 704
112 Yorktown Heights, NY 10598, USA
113 PICKUP(8)