Updated: 2022/Sep/29

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POSTLOG(1)                  General Commands Manual                 POSTLOG(1)

       postlog - Postfix-compatible logging utility

       postlog [-iv] [-c config_dir] [-p priority] [-t tag] [text...]

       The postlog(1) command implements a Postfix-compatible logging
       interface for use in, for example, shell scripts.

       By default, postlog(1) logs the text given on the command line as one
       record. If no text is specified on the command line, postlog(1) reads
       from standard input and logs each input line as one record.

       By default, logging is sent to syslogd(8) or postlogd(8); when the
       standard error stream is connected to a terminal, logging is sent there
       as well.

       The following options are implemented:

       -c config_dir
              Read the main.cf configuration file in the named directory
              instead of the default configuration directory.

       -i (obsolete)
              Include the process ID in the logging tag. This flag is ignored
              as of Postfix 3.4, where the PID is always included.

       -p priority (default: info)
              Specifies the logging severity: info, warn, error, fatal, or
              panic. With Postfix 3.1 and later, the program will pause for 1
              second after reporting a fatal or panic condition, just like
              other Postfix programs.

       -t tag Specifies the logging tag, that is, the identifying name that
              appears at the beginning of each logging record. A default tag
              is used when none is specified.

       -v     Enable verbose logging for debugging purposes. Multiple -v
              options make the software increasingly verbose.


              Directory with the main.cf file.

       The following main.cf parameters are especially relevant to this

       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
              configuration files.

       import_environment (see 'postconf -d' output)
              The list of environment parameters that a privileged Postfix
              process will import from a non-Postfix parent process, or
              name=value environment overrides.

       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 3.4 and later:

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

       postlog_service_name (postlog)
              The name of the postlogd(8) service entry in master.cf.

       postconf(5), configuration parameters
       postlogd(8), Postfix logging
       syslogd(8), system logging

       The Secure Mailer license must be distributed with this software.

       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