global has no MX records.
Question and response
Question
dig global. MX
Answer
The response has no answer records.
Authority
global. 3600 SOA a0.nic.global. hostmaster.donuts.email. 1771987008 7200 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0