ip0.67-202-100.internal.static.steadfastdns.net has no MX records.
Question and response
Question
dig ip0.67-202-100.internal.static.steadfastdns.net. MX
Answer
The response has no answer records.
Authority
static.steadfastdns.net. 604800 SOA r0.steadfastdns.net. root.steadfast.net. 2022010300 14400 7200 3600000 604800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0