mx.peopleinpublicservice.com has no NS records.
NS records for this zone are defined at peopleinpublicservice.com.
NS records for this zone are defined at peopleinpublicservice.com.
Question and response
Question
dig mx.peopleinpublicservice.com. NS
Answer
The response has no answer records.
Authority
peopleinpublicservice.com. 3600 SOA dns.peopleinpublicservice.com. hostmaster.peopleinpublicservice.com. 1939870628 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0