acme.neonova.net has no MX records.
Question and response
Question
dig acme.neonova.net. MX
Answer
The response has no answer records.
Authority
acme.neonova.net. 300 SOA acme.neonova.net. ops.neonova.net. 67173 86400 3600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0