smtp.etaika.fi has no NS records.
NS records for this zone are defined at etaika.fi.
NS records for this zone are defined at etaika.fi.
Question and response
Question
dig smtp.etaika.fi. NS
Answer
The response has no answer records.
Authority
etaika.fi. 900 SOA ns-1142.awsdns-14.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0