antispam03.armazemdatacenter.com has no MX records.
Question and response
Question
dig antispam03.armazemdatacenter.com. MX
Answer
The response has no answer records.
Authority
armazemdatacenter.com. 10800 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