mx.merilaventia.com has no NS records.
NS records for this zone are defined at merilaventia.com.
NS records for this zone are defined at merilaventia.com.
Question and response
Question
dig mx.merilaventia.com. NS
Answer
The response has no answer records.
Authority
merilaventia.com. 3600 SOA dns.merilaventia.com. hostmaster.merilaventia.com. 1364376092 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0