Postfix manual - postlogd(8)

    POSTLOGD(8)                                                        POSTLOGD(8)

    NAME
           postlogd - Postfix internal log server

    SYNOPSIS
           postlogd [generic Postfix daemon options]

    DESCRIPTION
           This program logs events on behalf of Postfix programs when the maillog
           configuration parameter specifies a non-empty value.

    BUGS
           Non-daemon Postfix programs don't know that  they  should  log  to  the
           internal  logging  service  before  they  have  processed  command-line
           options and main.cf parameters. These programs still log earlier events
           to the syslog service.

           If  Postfix  is down, the non-daemon programs postfix(1), postsuper(1),
           postmulti(1), and postlog(1), will log directly to $maillog_file. These
           programs expect to run with root privileges, for example during Postfix
           start-up, reload, or shutdown.

           Other non-daemon Postfix programs will never write directly  to  $mail-
           log_file (also, logging to stdout would interfere with the operation of
           some of these programs). These programs can log to postlogd(8) if  they
           are run by the super-user, or if their executable file has set-gid per-
           mission. Do not set this permission on programs other than postdrop(1),
           postqueue(1) and (Postfix >= 3.7) postlog(1).

    CONFIGURATION PARAMETERS
           Changes to main.cf are not picked up automatically, because postlogd(8)
           terminates only after reaching the max_idle time limit.  Use  the  com-
           mand "postfix reload" to speed up a change.

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

           config_directory (see 'postconf -d' output)
                  The default location of the Postfix main.cf and  master.cf  con-
                  figuration files.

           maillog_file (empty)
                  The  name  of an optional logfile that is written by the Postfix
                  postlogd(8) service.

           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.

           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".

           service_name (read-only)
                  The master.cf service name of a Postfix daemon process.

           postlogd_watchdog_timeout (10s)
                  How  much  time  a  postlogd(8)  process  may  take to process a
                  request before it is terminated by a built-in watchdog timer.

           Available in Postfix 3.9 and later:

           maillog_file_permissions (0600)
                  The file access permissions that  will  be  set  when  the  file
                  $maillog_file is created for the first time, or when the file is
                  created after an existing file is rotated.

    SEE ALSO
           postconf(5), configuration parameters
           syslogd(8), system logging

    README_FILES
           Use "postconf readme_directory" or "postconf html_directory" to  locate
           this information.
           MAILLOG_README, Postfix logging to file or stdout

    LICENSE
           The Secure Mailer license must be distributed with this software.

    HISTORY
           This service was introduced with Postfix version 3.4.

    AUTHOR(S)
           Wietse Venema
           Google, Inc.
           111 8th Avenue
           New York, NY 10011, USA

                                                                       POSTLOGD(8)