mx02.penso.com.br has no CNAME records.
Question and response
Question
dig mx02.penso.com.br. NS
Answer
The response has no answer records.
Authority
penso.com.br. 57 SOA ns1.penso.com.br. hostmaster.penso.com.br.penso.com.br. 2026022003 7200 1800 1209600 1200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0