mx4.profils.org has no NS records.
NS records for this zone are defined at profils.org.
NS records for this zone are defined at profils.org.
Question and response
Question
dig mx4.profils.org. NS
Answer
The response has no answer records.
Authority
profils.org. 3600 SOA ns0069.secondary.cloudflare.com. domainname.talentsoft.com. 2015106331 1200 300 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0