Question and response
Question
dig nttpc.co.jp. MX
Answer
nttpc.co.jp. 300 MX 10 nttpc-co-jp.mail.protection.outlook.com.
Authority
The response has no authority records.
Additional
. 0 OPT [{Extended_DNS_Error: PROHIBITED}] ; payload 1232, xrcode 0, version 0, flags 0