smtpd_recipient_restrictions = reject_unknown_recipient_domain,
    reject_non_fqdn_recipient,
    reject_non_fqdn_sender,
    reject_unknown_sender_domain,
    check_sender_mx_access cidr:/etc/postfix/bogus_mx,
    check_recipient_mx_access cidr:/etc/postfix/bogus_mx,
    reject_unlisted_recipient,
    permit_sasl_authenticated,
    permit_mynetworks,
    reject_unauth_destination,