dhcp.inet.fi has no MX records.
Question and response
Question
dig dhcp.inet.fi. MX
Answer
The response has no answer records.
Authority
dhcp.inet.fi. 86400 SOA nasu.intra.sonera.fi. dns.telia.fi. 1770120666 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0