smtp.sdn.csc.fi has no NS records.
NS records for this zone are defined at sdn.csc.fi.
NS records for this zone are defined at sdn.csc.fi.
Question and response
Question
dig argus.csc.fi. NS
Answer
The response has no answer records.
Authority
csc.fi. 900 SOA ns.funet.fi. hostmaster.funet.fi. 2026031315 10800 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0