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PICKUP(8postfix) PICKUP(8postfix)
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 di-
rectory, 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 man-
ager.
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 pub-
lic service endpoint.
DIAGNOSTICS
Problems and transactions are logged to syslogd(8) or postlogd(8).
BUGS
The pickup(8) daemon copies mail from file to the cleanup(8) daemon. It could avoid mes-
sage copying overhead by sending a file descriptor instead of file data, but then the al-
ready 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 be-
fore 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 includ-
ing examples.
CONTENT INSPECTION CONTROLS
content_filter (empty)
After the message is queued, send the entire message to the specified trans-
port:destination.
receive_override_options (empty)
Enable or disable recipient validation, built-in content filtering, or address map-
ping.
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 de-
livery, long lines are reconstructed.
max_idle (100s)
The maximum amount of time that an idle Postfix daemon process waits for an incom-
ing connection before terminating voluntarily.
max_use (100)
The maximal number of incoming connections that a Postfix daemon process will ser-
vice 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)
A prefix that is prepended to the process name in syslog records, so that, for ex-
ample, "smtpd" becomes "prefix/smtpd".
Available in Postfix 3.3 and later:
service_name (read-only)
The master.cf service name of a Postfix daemon process.
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
postlogd(8), Postfix logging
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
Wietse Venema
Google, Inc.
111 8th Avenue
New York, NY 10011, USA
PICKUP(8postfix)
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On Apache
Under GNU General Public License
2024-04-19 16:33 @18.223.106.100 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)