proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit
smtpd_recipient_restrictions = permit_sasl_authenticated, check_sender_access regexp:/etc/postfix/filter-catchall, permit_mynetworks, reject_unauth_destination, reject_unlisted_recipient, check_recipient_access hash:/etc/postfix/recipient_access, check_client_access regexp:/etc/postfix/client_checks, check_client_access cidr:/etc/postfix/access, check_helo_access hash:/etc/postfix/helo_checks, check_recipient_access regexp:/etc/postfix/recipient_checks, reject_unknown_recipient_domain, reject_non_fqdn_hostname, reject_non_fqdn_recipient, reject_non_fqdn_sender, reject_invalid_hostname, reject_rbl_client bl.spamcop.net, reject_rbl_client zen.spamhaus.org, reject_rbl_client combined.njabl.org, reject_rbl_client list.dsbl.org, permit_mx_backup, permit
smtpd_sender_restrictions = reject_unknown_sender_domain