Question and response
Question
dig darl.com. MX
Answer
darl.com. 3600 MX 10 mx.darl.com.cust.b.hostedemail.com.
Authority
The response has no authority records.
Additional
. 0 OPT [{Extended_DNS_Error: PROHIBITED}] ; payload 1232, xrcode 0, version 0, flags 0