Question and response
Question
dig thpttanphu.com. MX
Answer
thpttanphu.com. 3600 MX 0 mx.thpttanphu.com.
Authority
The response has no authority records.
Additional
mx.thpttanphu.com. 3600 A 207.90.207.100
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0