antispam03.armazemdatacenter.com has no CNAME records.
Question and response
Question
dig antispam03.armazemdatacenter.com. NS
Answer
The response has no answer records.
Authority
armazemdatacenter.com. 4083 SOA ns1.armazemdatacenter.com.br. suporte.armazemdc.com.br. 2021060908 900 900 1296000 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0