NAME
pickup - Postfix local mail pickupSYNOPSIS
pickup [generic Postfix daemon options]
DESCRIPTION
The 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.
STANDARDS
None. The daemon does not interact with the outside world.
SECURITY
The 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 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.
DIAGNOSTICS
Problems and transactions are logged to syslogd(8) or postlogd(8).
BUGS
The 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 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.
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.
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".
- service_name (read-only)
- The master.cf service name of a Postfix daemon process.
- info_log_address_format (external)
- The email address form that will be used in non-debug logging (info, warning, etc.).
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