_se4.dna.fi has no MX records.
Question and response
Question
dig _se4.dna.fi. MX
Answer
The response has no answer records.
Authority
dna.fi. 900 SOA ns1.fv.fi. hostmaster.dnaip.fi. 2026022300 28800 7200 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0