    ERROR(8)                                                              ERROR(8)

    NAME
           error - Postfix error/retry mail delivery agent

    SYNOPSIS
           error [generic Postfix daemon options]

    DESCRIPTION
           The  Postfix  error(8)  delivery agent processes delivery requests from
           the queue manager. Each  request  specifies  a  queue  file,  a  sender
           address,  the reason for non-delivery (specified as the next-hop desti-
           nation), and recipient information.  The reason may be prefixed with an
           RFC  3463-compatible  detail code; if none is specified a default 4.0.0
           or 5.0.0 code is used instead.  This program expects to be run from the
           master(8) process manager.

           Depending  on the service name in master.cf, error or retry, the server
           bounces or defers all recipients in  the  delivery  request  using  the
           "next-hop"  information  as the reason for non-delivery. The retry ser-
           vice name is supported as of Postfix 2.4.

           Delivery status reports are sent to the bounce(8), defer(8) or trace(8)
           daemon as appropriate.

    SECURITY
           The  error(8) mailer is not security-sensitive. It does not talk to the
           network, and can be run chrooted at fixed low privilege.

    STANDARDS
           RFC 3463 (Enhanced Status Codes)

    DIAGNOSTICS
           Problems and transactions are logged to syslogd(8) or postlogd(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 error(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.

           2bounce_notice_recipient (postmaster)
                  The recipient of undeliverable mail that cannot be  returned  to
                  the sender.

           bounce_notice_recipient (postmaster)
                  The recipient of postmaster notifications with the message head-
                  ers of mail that Postfix did not deliver and of  SMTP  conversa-
                  tion transcripts of mail that Postfix did not receive.

           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.

           delay_logging_resolution_limit (2)
                  The  maximal  number of digits after the decimal point when log-
                  ging delay values.

           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 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.

           notify_classes (resource, software)
                  The list of error classes that are reported to the postmaster.

           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.

    SEE ALSO
           qmgr(8), queue manager
           bounce(8), delivery status reports
           discard(8), Postfix discard delivery 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

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