smtp.fi.cloudplatform.fi has no CNAME records.
Question and response
Question
dig smtp.fi.cloudplatform.fi. NS
Answer
The response has no answer records.
Authority
fi.cloudplatform.fi. 120 SOA fi.cloudplatform.fi. dns.fi.cloudplatform.fi. 2012511029 10800 3600 604800 120
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0