userportal.aciglobal.com has no MX records.
Question and response
Question
dig userportal.neonova.net. MX
Answer
The response has no answer records.
Authority
neonova.net. 60 SOA ns1.neonova.net. hostmaster.neonova.net. 2026010600 43200 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0