ns.zone.fi has no MX records.
Question and response
Question
dig ns.zone.fi. MX
Answer
The response has no answer records.
Authority
zone.fi. 3600 SOA ns.zone.eu. hostmaster.zone.eu. 2026021220 10800 3600 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0