Question and response
Question
dig www.smtpcorp.com. A
Answer
www.smtpcorp.com. 600 CNAME smtpadmin.smtpcorp.com.
smtpadmin.smtpcorp.com. 300 A 198.74.56.28
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0