mxquery.trueinternet.co.th has no CNAME records.
Question and response
Question
dig mxquery.trueinternet.co.th. NS
Answer
The response has no answer records.
Authority
trueinternet.co.th. 11 SOA conductor.asianet.co.th. abuse.trueinternet.co.th. 2026021900 14400 7200 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0