mx2.sprics.gov.do has no CNAME records.
Question and response
Question
dig mx2.sprics.gov.do. NS
Answer
The response has no answer records.
Authority
sprics.gov.do. 6971 SOA dns4.midominio.do. servicios.sprics.gov.do. 2021061002 7200 7200 1209600 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0