Question and response
Question
dig hsdomainkey.com. MX
Answer
hsdomainkey.com. 3600 MX 0 mx.hsdomainkey.com.
Authority
The response has no authority records.
Additional
mx.hsdomainkey.com. 3600 A 74.122.193.134
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0