smtp.mv.sonera.fi has no NS records.
NS records for this zone are defined at mv.sonera.fi.
NS records for this zone are defined at mv.sonera.fi.
Question and response
Question
dig smtp.mv.sonera.fi. NS
Answer
The response has no answer records.
Authority
mv.sonera.fi. 1800 SOA volvo.mv.sonera.fi. verkkotiimi.mobile.sonera.net. 3603160842 1800 1200 604800 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0