Question and response
Question
dig sell-hub.com. MX
Answer
sell-hub.com. 3600 MX 0 mx.sell-hub.com.
Authority
The response has no authority records.
Additional
mx.sell-hub.com. 3600 A 69.162.72.77
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0