Question and response
Question
dig topbrandca.com. MX
Answer
topbrandca.com. 3600 MX 0 mx.topbrandca.com.
Authority
The response has no authority records.
Additional
mx.topbrandca.com. 3600 A 63.143.46.166
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0