mx.ipacs.pro has no NS records.
NS records for this zone are defined at ipacs.pro.
NS records for this zone are defined at ipacs.pro.
Question and response
Question
dig mx.ipacs.pro. NS
Answer
The response has no answer records.
Authority
ipacs.pro. 10800 SOA ns1.gandi.net. hostmaster.gandi.net. 1771661109 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0