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 including examples.alternate_config_directories (empty)
A list of non-default Postfix configuration directories that may be specified with "-c config_directory" on the command line, or via the MAIL_CONFIG environment parameter.
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 Postfix process will import from a non-Postfix parent 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".
trigger_timeout (10s)
The time limit for sending a trigger to a Postfix daemon (for example, the pickup(8) or qmgr(8) daemon).
Available in Postfix version 2.2 and later:
authorized_submit_users (static:anyone)
List of users who are authorized to submit mail with the sendmail(1) command (and with the privileged postdrop(1) helper command).