mx.silenamotive.com has no NS records.
NS records for this zone are defined at silenamotive.com.
NS records for this zone are defined at silenamotive.com.
Question and response
Question
dig mx.silenamotive.com. NS
Answer
The response has no answer records.
Authority
silenamotive.com. 3600 SOA dns.silenamotive.com. hostmaster.silenamotive.com. 1618892745 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0