vardnn0571.publiccloud.com.br has no MX records.
Question and response
Question
dig vardnn0571.publiccloud.com.br. MX
Answer
The response has no answer records.
Authority
publiccloud.com.br. 3600 SOA ns1.locaweb.com.br. hostmaster.locaweb.com.br. 2023110803 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0