ns2.ceinetworks.com has no MX records.
Question and response
Question
dig ns2.ceinetworks.com. MX
Answer
The response has no answer records.
Authority
ceinetworks.com. 86400 SOA ns5-auth.windstream.net. hostmaster.windstream.net. 2020100604 28800 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0