% service postfix restart
Shutting down postfix:                                                                                                            [ DONE ]
Adjusting environment for postfix:                                                                                                [ DONE ]
Checking postfix configuration: postfix/postfix-script: warning: /etc/postfix/main.cf: unknown parameters: pass_postmaster, permit_bad_helo
                                                                                                                                  [ DONE ]
Starting postfix:                                                                                                                 [ DONE ]

% cat main.cf

...

smtpd_restriction_classes = permit_bad_helo, pass_postmaster
permit_bad_helo = reject_unauth_destination, permit
pass_postmaster = permit_mynetworks,
    permit_sasl_authenticated,
    reject_unauth_destination,
    check_policy_service inet:127.0.0.1:60000,
    permit

...