Question and response
Question
dig rvvnet.com. MX
Answer
rvvnet.com. 3600 MX 0 mx.rvvnet.com.
Authority
The response has no authority records.
Additional
mx.rvvnet.com. 3600 A 69.162.81.142
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0