mx.matt-daly.com has no CNAME records.
Question and response
Question
dig mx.matt-daly.com. NS
Answer
The response has no answer records.
Authority
matt-daly.com. 2305 SOA dns.matt-daly.com. hostmaster.matt-daly.com. 1148603006 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0