st.vc.shawcable.net has no MX records.
Question and response
Question
dig st.vc.shawcable.net. MX
Answer
The response has no answer records.
Authority
st.vc.shawcable.net. 600 SOA pd2ns1.st.vc.shawcable.net. dnsadmin.shaw.ca. 219 10800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0