NAME

discard - Postfix discard mail delivery agent

SYNOPSIS


ddiissccaarrdd [generic Postfix daemon options]

DESCRIPTION

The Postfix ddiissccaarrdd(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 discarding the mail, and recipient information. The reason may be prefixed with an RFC 3463-compatible detail code. This program expects to be run from the mmaasstteerr(8) process manager.

The ddiissccaarrdd(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 recipients as finished or informs the queue manager that delivery should be tried again at a later time.

Delivery status reports are sent to the ttrraaccee(8) daemon as appropriate.

SECURITY



The ddiissccaarrdd(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 ssyyssllooggdd(8).

Depending on the setting of the nnoottiiffyy__ccllaasssseess parameter, the postmaster is notified of bounces and of other trouble.

CONFIGURATION PARAMETERS



Changes to mmaaiinn..ccff are picked up automatically as ddiissccaarrdd(8)
processes run for only a limited amount of time. Use the command
"ppoossttffiixx rreellooaadd" to speed up a change.
        

The text below provides only a parameter summary. See ppoossttccoonnff(5) for more details including examples.

ccoonnffiigg__ddiirreeccttoorryy ((sseeee ''ppoossttccoonnff --dd'' oouuttppuutt)) The default location of the Postfix main.cf and master.cf
configuration files.
ddaaeemmoonn__ttiimmeeoouutt ((1188000000ss)) How much time a Postfix daemon process may take to handle a
request before it is terminated by a built-in watchdog timer.
ddeellaayy__llooggggiinngg__rreessoolluuttiioonn__lliimmiitt ((22)) The maximal number of digits after the decimal point when logging
sub-second delay values.
ddoouubbllee__bboouunnccee__sseennddeerr ((ddoouubbllee--bboouunnccee)) The sender address of postmaster notifications that are generated
by the mail system.
iippcc__ttiimmeeoouutt ((33660000ss)) The time limit for sending or receiving information over an internal
communication channel.
mmaaxx__iiddllee ((110000ss)) The maximum amount of time that an idle Postfix daemon process waits
for an incoming connection before terminating voluntarily.
mmaaxx__uussee ((110000)) The maximal number of incoming connections that a Postfix daemon
process will service before terminating voluntarily.
pprroocceessss__iidd ((rreeaadd--oonnllyy)) The process ID of a Postfix command or daemon process.
pprroocceessss__nnaammee ((rreeaadd--oonnllyy)) The process name of a Postfix command or daemon process.
qquueeuuee__ddiirreeccttoorryy ((sseeee ''ppoossttccoonnff --dd'' oouuttppuutt)) The location of the Postfix top-level queue directory.
ssyysslloogg__ffaacciilliittyy ((mmaaiill)) The syslog facility of Postfix logging.
ssyysslloogg__nnaammee ((sseeee ''ppoossttccoonnff --dd'' oouuttppuutt)) The mail system name that is prepended to the process name in syslog
records, so that "smtpd" becomes, for example, "postfix/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