    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  destination),  and  recipient
           information.   The  reason  may  be  prefixed  with an RFC
           3463-compatible detail code.  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 service  name  is  sup-
           ported 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).

           Depending on the setting of the notify_classes  parameter,
           the  postmaster  is notified of bounces and of other trou-
           ble.

    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  headers  of  mail  that  Postfix  did  not
                  deliver and of  SMTP  conversation  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 configuration 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 logging sub-second delay values.

           double_bounce_sender (double-bounce)
                  The sender address of postmaster notifications that
                  are generated 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  termi-
                  nating 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  direc-
                  tory.

           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, "postfix/smtpd".

    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
           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

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