_netblocks1.luxscioffice.com has no MX records.
Question and response
Question
dig _netblocks1.luxscioffice.com. MX
Answer
The response has no answer records.
Authority
luxscioffice.com. 300 SOA dns1.easydns.com. zone.easydns.com. 1767395959 86400 43200 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0