pickup - Postfix local mail pickup
Contents
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 "postfixreload" 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.
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.
Diagnostics
Problems and transactions are logged to syslogd(8) or postlogd(8).
License
The Secure Mailer license must be distributed with this software.
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)
A prefix that is prepended to the process name in syslog records, so that, for example, "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.
Available in Postfix 3.5 and later:
info_log_address_format(external)
The email address form that will be used in non-debug logging (info, warning, etc.).
Name
pickup - Postfix local mail pickup
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.
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
Standards
None. The pickup(8) daemon does not interact with the outside world.
Synopsis
pickup [generic Postfix daemon options]
