Hi Group, The document segment about the reject_unknown_sender_domain says that it will reject the domain without A record or MX record. Does it mean that only domains with both A and MX record will be accepted? Or, it means any domains with only A record,domains with only MX record or with both will be accepted. Can anyone clarify it? Thanks!
I just want to block the senders whose domain without MX record, even if it has an A record. Thanks! Daniel Zhou
