mail.1.fm has no CNAME records.
Question and response
Question
dig mail.1.fm. NS
Answer
The response has no answer records.
Authority
1.fm. 253 SOA dns1.easydns.com. zone.easydns.com. 1770410090 3600 600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0