smtpd_recipient_restrictions =
                        permit_sasl_authenticated
                        check_sender_access regexp:/etc/postfix/filter-catchall
                        reject_invalid_hostname
                        reject_non_fqdn_hostname
                        reject_non_fqdn_sender
                        reject_non_fqdn_recipient
                        reject_unknown_sender_domain
                        reject_unknown_recipient_domain
                        reject_unlisted_recipient
                        permit_mynetworks
                        reject_unauth_destination
                        check_recipient_access regexp:/etc/postfix/recipient_checks
                        check_recipient_access hash:/etc/postfix/recipient_access
                        check_helo_access hash:/etc/postfix/helo_checks
                        check_sender_mx_access cidr:/etc/postfix/mx_access
                        check_sender_access hash:/etc/postfix/disallow_my_domains
                        check_client_access cidr:/etc/postfix/access
                        check_client_access regexp:/etc/postfix/client_checks
                        reject_rbl_client bl.spamcop.net
                        reject_rbl_client zen.spamhaus.org
                        reject_rbl_client list.dsbl.org
                        reject_rbl_client dnsbl.njabl.org
                        reject_rbl_client dnsbl.sorbs.net
                        permit_mx_backup
                        permit