Question and response
Question
dig s1.mxout.mta3.net. A
Answer
s1.mxout.mta3.net. 3600 A 188.165.144.128
Authority
mta3.net. 3600 NS pdns10.domaincontrol.com.
mta3.net. 3600 NS pdns09.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0