    ERROR(8)                                                 ERROR(8)

    NAME
           error - Postfix error mail delivery agent

    SYNOPSIS
           error [generic Postfix daemon options]

    DESCRIPTION
           The   Postfix  error  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 non-delivery,  and  recipient
           information.  This program expects to be run from the mas-
           ter(8) process manager.

           The error delivery agent bounces  all  recipients  in  the
           delivery  request  using  the  "next-hop"  domain  or host
           information as the reason for  non-delivery,  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  bounce(8),
           defer(8) or trace(8) daemon as appropriate.

    SECURITY
           The error 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  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.

           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 the next service request
                  before exiting.

           max_use (100)
                  The maximal number of connection requests before  a
                  Postfix daemon process terminates.

           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  pro-
                  cess.

           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 pro-
                  cess  name  in  syslog  records,  so  that  "smtpd"
                  becomes, for example, "postfix/smtpd".

    SEE ALSO
           qmgr(8), queue manager
           bounce(8), delivery status reports
           postconf(5), configuration parameters
           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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