>>> #
>>> # permit_naked_ip_address
>>> #
>>> client foo 127.0.0.2
OK
>>> recipient_restrictions permit_naked_ip_address
OK
>>> helo 127.0.0.2
OK
>>> mail sname@sdomain.example
OK
>>> rcpt rname@rdomain.example
./smtpd_check: warning: restriction permit_naked_ip_address has been removed in Postfix 3.9; use permit_mynetworks or permit_sasl_authenticated instead
./smtpd_check: <queue id>: reject: RCPT from foo[127.0.0.2]: 451 4.3.5 Server configuration error; from=<sname@sdomain.example> to=<rname@rdomain.example> proto=SMTP helo=<127.0.0.2>
451 4.3.5 Server configuration error
>>> #
>>> # check_relay_domains
>>> #
>>> client foo 127.0.0.2
OK
>>> recipient_restrictions check_relay_domains
OK
>>> relay_domains foo
OK
>>> helo 127.0.0.2
OK
>>> mail sname@sdomain.example
OK
>>> rcpt rname@rdomain.example
./smtpd_check: warning: support for restriction "check_relay_domains" has been removed in Postfix 3.9; use "reject_unauth_destination" instead
./smtpd_check: <queue id>: reject: RCPT from foo[127.0.0.2]: 451 4.3.5 Server configuration error; from=<sname@sdomain.example> to=<rname@rdomain.example> proto=SMTP helo=<127.0.0.2>
451 4.3.5 Server configuration error
>>> #
>>> # reject_maps_rbl is already covered elsewhere.
>>> #