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.
export_environment (see 'postconf -d' output)
The list of environment variables that a Postfix process will export to non-Postfix processes.
ipc_timeout (3600s)
The time limit for sending or receiving information over an internal communication channel.
mail_owner (postfix)
The UNIX system account that owns the Postfix queue and most Postfix daemon processes.
max_idle (100s)
The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily.
max_use (100)
The maximal number of incoming connections that a Postfix daemon process will service before terminating voluntarily.
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 (see 'postconf -d' output)
The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "postfix/smtpd".