mx.inboxed3.com has no NS records.
NS records for this zone are defined at inboxed3.com.
NS records for this zone are defined at inboxed3.com.
Question and response
Question
dig mx.inboxed3.com. NS
Answer
The response has no answer records.
Authority
inboxed3.com. 3600 SOA dns.inboxed3.com. hostmaster.inboxed3.com. 1954959806 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0