smtp.amenableautonomy.com has no NS records.
NS records for this zone are defined at amenableautonomy.com.
NS records for this zone are defined at amenableautonomy.com.
Question and response
Question
dig smtp.amenableautonomy.com. NS
Answer
The response has no answer records.
Authority
amenableautonomy.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1771914006 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0