www1.inetu.net has no MX records.
Question and response
Question
dig www1.inetu.net. MX
Answer
The response has no answer records.
Authority
inetu.net. 3600 SOA ns3.inetu.net. root.inetu.net. 2025111000 3600 300 7200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0