my_networks= my_hostname= smtpd_helo_required=yes smtpd_client_restrictions smtpd_sender_restrictions smtpd_relay_restrictions smtpd_recipient_restrictions smtpd_etrn_restrictions smtpd_helo_restrictions smtpd_data_restrictions smtpd_end_of_data_restrictions permit_my_networks # reject reject_unknown_client reject_unknown_client_hostname reject_unknown_reverse_client_hostname reject_unknown_recipient_domain reject_unknown_sender_domain reject_anouth_destination reject_invalid_hostname reject_unknown_helo_hostname # client reject_unknown_client reject_unknown_client_hostname reject_unknown_reverse_client_hostname # hostname reject_unknown_helo_hostname reject_invalid_hostname reject_unknown_client_hostname reject_unknown_reverse_client_hostname reject_non_fqdn_hostname # recipient_domain reject_unknown_recipient_domain reject_non_fqdn_recipient # sender_domain reject_unknown_sender_domain reject_non_fqdn_sender # non_fqdn reject_non_fqdn_sender reject_non_fqdn_recipient reject_non_fqdn_hostname # anouth reject_unauth_destination reject_unauth_pipelining check_policy_service