spf.linecarrier.fi has no MX records.
Question and response
Question
dig spf.linecarrier.fi. MX
Answer
The response has no answer records.
Authority
linecarrier.fi. 86400 SOA pns31.cloudns.net. zabbix.linecarrier.fi. 2026022303 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0