health has no MX records.
Question and response
Question
dig health. MX
Answer
The response has no answer records.
Authority
health. 900 SOA ns1.dns.nic.health. admin.tldns.godaddy. 1772298771 1800 300 604800 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0