Question and response
Question
dig kfyuzhou.info. MX
Answer
kfyuzhou.info. 1800 MX 10 kfyuzhou.info.
Authority
kfyuzhou.info. 1800 NS dns1.registrar-servers.com.
kfyuzhou.info. 1800 NS dns2.registrar-servers.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0
kfyuzhou.info. 1800 A 198.46.135.90