sired.gov.do has no MX records.
Question and response
Question
dig sired.gov.do. MX
Answer
The response has no answer records.
Authority
sired.gov.do. 7200 SOA dns40.midominio.do. rmallol.economia.gob.do. 2019102401 7200 7200 172800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0