ns1.utgmpls.net has no MX records.
Question and response
Question
dig ns1.utgmpls.net. MX
Answer
The response has no answer records.
Authority
utgmpls.net. 86400 SOA ns.utgmpls.net. dnsboss.mail.utgmpls.net. 2021041300 28800 7200 2419200 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0