minerd.gov.do has no MX records.
Question and response
Question
dig minerd.gov.do. MX
Answer
The response has no answer records.
Authority
minerd.gov.do. 3600 SOA ns1-06.azure-dns.com. hostmaster. 3 900 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0