smtpmxlitepool01.velop.com has no CNAME records.
Question and response
Question
dig smtpmxlitepool01.velop.com. NS
Answer
The response has no answer records.
Authority
velop.com. 1122 SOA dnsc1.penso.com.br. hostmaster.penso.com.br.velop.com. 2023050802 7200 3600 172800 1200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0