Question and response
Question
dig mysmtp5.com. MX
Answer
mysmtp5.com. 600 MX 0 zmb-gate.mysmtp.com.
Authority
mysmtp5.com. 3600 NS pdns12.domaincontrol.com.
mysmtp5.com. 3600 NS pdns11.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0