mx.romuralli.com has no NS records.
NS records for this zone are defined at romuralli.com.
NS records for this zone are defined at romuralli.com.
Question and response
Question
dig mx.romuralli.com. NS
Answer
The response has no answer records.
Authority
romuralli.com. 3600 SOA dns.romuralli.com. hostmaster.romuralli.com. 1674235055 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0