Something
public text v1 · immutablesmtpd_recipient_restrictions =
permit_mynetworks,
reject_unknown_recipient_domain,
reject_unauth_destination,
reject_rbl_client sbl.spamhaus.org,
reject_rbl_client dnsbl.sorbs.net,
reject_unknown_sender_domain,
reject_invalid_hostname,
reject_non_fqdn_sender,
reject_non_fqdn_hostname,
reject_non_fqdn_recipient,
permit