ceye.edu.do has no MX records.
Question and response
Question
dig ceye.edu.do. MX
Answer
The response has no answer records.
Authority
ceye.edu.do. 3600 SOA HGNS1.HOSTGATOR.COM. root.HOSTGATOR.COM. 125081006 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0