mx.emaillabs.co has no CNAME records.
Question and response
Question
dig mx.emaillabs.co. NS
Answer
The response has no answer records.
Authority
emaillabs.co. 378 SOA ns1.emaillabs.co. root.emaillabs.co. 2025082015 28800 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0