# client # recipient # hostname # sender smtpd_client_restrictions smtpd_sender_restrictions smtpd_recipient_restrictions smtpd_helo_restrictions smtpd_etrn_restrictions smtpd_data_restrictions smtpd_end_of_data_restrictions permit_my_networks # unknown reject_unknown_client reject_unknown_client_hostname reject_unknown_reverse_client_hostname reject_unknown_sender_domain reject_unknown_hostname reject_unknown_recipient_domain reject_unknown_helo_hostname # invalid reject_invalid_hostname # client reject_unknown_client reject_unknown_client_hostname reject_unknown_reverse_client_hostname # unauth reject_unauth_destination reject_unauth_sender_domain # sender reject_unauth_sender_domain reject_non_fqn_sender # recipient reject_unauth_recipient_domain reject_non_fqdn_recipient # non_fqdn reject_non_fqdn_sender reject_non_fqdn_recipient reject_non_fqdn_hostname check_policy