mail.litewire.net has no CNAME records.
Question and response
Question
dig mail.litewire.net. NS
Answer
The response has no answer records.
Authority
litewire.net. 3600 SOA epsiloniii. hostmaster.litewire.net. 2019013531 1200 600 1296000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0