Question and response
Question
dig mkto-ab050145.com. MX
Answer
mkto-ab050145.com. 1800 MX 0 smtp.google.com.
Authority
mkto-ab050145.com. 1800 NS dns1.registrar-servers.com.
mkto-ab050145.com. 1800 NS dns2.registrar-servers.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0