mx.postal.nudgepro.tech has no CNAME records.
Question and response
Question
dig mx.postal.nudgepro.tech. NS
Answer
The response has no answer records.
Authority
nudgepro.tech. 600 SOA pdns11.domaincontrol.com. dns.jomax.net. 2025122406 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0