Question and response
Question
dig mtb-1.com. MX
Answer
mtb-1.com. 3600 MX 0 pop.mtb-1.com.
Authority
mtb-1.com. 3600 NS pdns02.domaincontrol.com.
mtb-1.com. 3600 NS pdns01.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0