pickup - Postfix local mail pickup
pickup [generic Postfix daemon options]
(8) daemon waits for hints that new mail has been dropped into
directory, and feeds it into the cleanup
Ill-formatted files are deleted without notifying the originator. This program
expects to be run from the master
(8) process manager.
None. The pickup
(8) daemon does not interact with the outside world.
(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.
Problems and transactions are logged to syslogd
(8) daemon copies mail from file to the cleanup
daemon. It could avoid message copying overhead by sending a file descriptor
instead of file data, but then the already complex cleanup
would have to deal with unfiltered user data.
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
more details including examples.
- content_filter (empty)
- After the message is queued, send the entire message to the
- receive_override_options (empty)
- Enable or disable recipient validation, built-in content
filtering, or address mapping.
- config_directory (see 'postconf -d' output)
- The default location of the Postfix main.cf and master.cf
- 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
- 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
- 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
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
The Secure Mailer license must be distributed with this software.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
111 8th Avenue
New York, NY 10011, USA