INTERNET-DEDICADO-91.wmservice.com.do has no MX records.
Question and response
Question
dig INTERNET-DEDICADO-91.wmservice.com.do. MX
Answer
The response has no answer records.
Authority
wmservice.com.do. 86400 SOA ns1.hostinger.com. dns.hostinger.com. 2019032100 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0