mx.laltrarisacca.com has no NS records.
NS records for this zone are defined at laltrarisacca.com.
NS records for this zone are defined at laltrarisacca.com.
Question and response
Question
dig mx.laltrarisacca.com. NS
Answer
The response has no answer records.
Authority
laltrarisacca.com. 3600 SOA dns.laltrarisacca.com. hostmaster.laltrarisacca.com. 1299436267 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0