Question and response
Question
dig appmail.adwaresystems.com. MX
Answer
appmail.adwaresystems.com. 3600 MX 0 .
Authority
appmail.adwaresystems.com. 3600 NS ns4.afternic.com.
appmail.adwaresystems.com. 3600 NS ns3.afternic.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0