no.cg.shawcable.net has no MX records.
Question and response
Question
dig no.cg.shawcable.net. MX
Answer
The response has no answer records.
Authority
no.cg.shawcable.net. 600 SOA ns1.so.cg.shawcable.net. dnsadmin.shaw.ca. 435 10800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0