discard(8) - NetBSD Manual Pages

DISCARD(8)                                                          DISCARD(8)




NAME
discard - Postfix discard mail delivery agent
SYNOPSIS
discard [generic Postfix daemon options]
DESCRIPTION
The Postfix discard(8) delivery agent processes delivery requests from the queue manager. Each request specifies a queue file, a sender address, a domain or host name that is treated as the reason for dis- carding the mail, and recipient information. This program expects to be run from the master(8) process manager. The discard(8) delivery agent pretends to deliver all recipients in the delivery request, logs the "next-hop" domain or host information as the reason for discarding the mail, updates the queue file and marks recip- ients as finished or informs the queue manager that delivery should be tried again at a later time. Delivery status reports are sent to the trace(8) daemon as appropriate.
SECURITY
The discard(8) mailer is not security-sensitive. It does not talk to the network, and can be run chrooted at fixed low privilege.
STANDARDS
None.
DIAGNOSTICS
Problems and transactions are logged to syslogd(8). Depending on the setting of the notify_classes parameter, the postmas- ter is notified of bounces and of other trouble.
CONFIGURATION PARAMETERS
Changes to main.cf are picked up automatically as discard(8) processes run for only a limited amount of time. Use the command "postfix reload" to speed up a change. The text below provides only a parameter summary. See postconf(5) for more details including examples. config_directory (see 'postconf -d' output) The default location of the Postfix main.cf and master.cf con- figuration files. daemon_timeout (18000s) How much time a Postfix daemon process may take to handle a request before it is terminated by a built-in watchdog timer. double_bounce_sender (double-bounce) The sender address of postmaster notifications that are gener- ated by the mail system. ipc_timeout (3600s) The time limit for sending or receiving information over an internal communication channel. max_idle (100s) The maximum amount of time that an idle Postfix daemon process waits for the next service request before exiting. max_use (100) The maximal number of connection requests before a Postfix dae- mon process terminates. 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 (postfix) The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- fix/smtpd".
SEE ALSO
qmgr(8), queue manager bounce(8), delivery status reports error(8), Postfix error delivery agent postconf(5), configuration parameters master(5), generic daemon options master(8), process manager syslogd(8), system logging
LICENSE
The Secure Mailer license must be distributed with this software.
HISTORY
This service was introduced with Postfix version 2.2.
AUTHOR(S)
Victor Duchovni Morgan Stanley Based on code by: Wietse Venema IBM T.J. Watson Research P.O. Box 704 Yorktown Heights, NY 10598, USA DISCARD(8)

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