mx.successpulseu.com has no NS records.
NS records for this zone are defined at successpulseu.com.
NS records for this zone are defined at successpulseu.com.
Question and response
Question
dig mx.successpulseu.com. NS
Answer
The response has no answer records.
Authority
successpulseu.com. 3600 SOA dns.successpulseu.com. hostmaster.successpulseu.com. 1891666199 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0