mx.biorkaguesthouse.com has no NS records.
NS records for this zone are defined at biorkaguesthouse.com.
NS records for this zone are defined at biorkaguesthouse.com.
Question and response
Question
dig mx.biorkaguesthouse.com. NS
Answer
The response has no answer records.
Authority
biorkaguesthouse.com. 3600 SOA dns.biorkaguesthouse.com. hostmaster.biorkaguesthouse.com. 1431235548 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0