smtpcrm.algartelecom.com.br has no MX records.
Question and response
Question
dig smtpcrm.algartelecom.com.br. MX
Answer
The response has no answer records.
Authority
algartelecom.com.br. 300 SOA nspar.ctbc.com.br. internet.ctbctelecom.net.br. 2026021201 10800 3600 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0