ndvr.conwaycorp.net has no MX records.
Question and response
Question
dig ndvr.conwaycorp.net. MX
Answer
The response has no answer records.
Authority
conwaycorp.net. 2560 SOA ns.conwaycorp.net. hostmaster.conwaycorp.net. 1771963386 16384 2048 1048576 2560
Additional
The response has no additional records.