smtpd_helo_restrictions = permit_mynetworks, check_helo_access regexp:/etc/postfix/helo_access, permit_sasl_authenticated, check_helo_access regexp:/etc/postfix/blacklist_helo, permit
smtpd_sender_restrictions = check_sender_access proxy:mysql:/etc/postfix/mysql-virtual_sender.cf, permit_mynetworks, permit_sasl_authenticated
smtpd_recipient_restrictions = permit_mynetworks, reject_unlisted_recipient, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access proxy:mysql:/etc/postfix/mysql-virtual_recipient.cf, check_recipient_access mysql:/etc/postfix/mysql-virtual_policy_greylist.cf, check_policy_service unix:private/quota-status
