Configuration improvement suggestion for postfix 2.10+

In http://www.postfix.org/SMTPD_ACCESS_README.html#danger Vietse advises to specify relay policy under smtpd_relay_restrictions and spam blocking policy under smtpd_recipient_restrictions. Cause: "Then, a permissive spam blocking policy will not result in a permissive mail relay policy."

Current configuration looks like this: smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf

which seems to be ok, but invites for errors in case of manual reconfiguration.