sfmail.srv.hosting.fi has no MX records.
Question and response
Question
dig sfmail.srv.hosting.fi. MX
Answer
The response has no answer records.
Authority
hosting.fi. 1800 SOA ns1.cygate.fi. hostmaster.nebula.fi. 2017084183 636141 600 2419200 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0