mx.fduniform.com has no NS records.
NS records for this zone are defined at fduniform.com.
NS records for this zone are defined at fduniform.com.
Question and response
Question
dig mx.fduniform.com. NS
Answer
The response has no answer records.
Authority
fduniform.com. 3600 SOA dns.fduniform.com. hostmaster.fduniform.com. 1732384599 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0