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POSTLOG(1) General Commands Manual POSTLOG(1)
NAME
postlog - Postfix-compatible logging utility
SYNOPSIS
postlog [-iv] [-c config_dir] [-p priority] [-t tag] [text...]
DESCRIPTION
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 begin-
ning 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 soft-
ware increasingly verbose.
ENVIRONMENT
MAIL_CONFIG
Directory with the main.cf file.
CONFIGURATION PARAMETERS
The following main.cf parameters are especially relevant to this program.
The text below provides only a parameter summary. See postconf(5) for more details includ-
ing 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 ex-
ample, "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.
SEE ALSO
postconf(5), configuration parameters
postlogd(8), Postfix logging
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
Wietse Venema
Google, Inc.
111 8th Avenue
New York, NY 10011, USA
POSTLOG(1)
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On Apache
Under GNU General Public License
2025-11-21 17:52 @216.73.216.164 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)