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 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.
              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.

       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 (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
       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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