ns8socg.shawcable.net has no MX records.
Question and response
Question
dig ns8socg.shawcable.net. MX
Answer
The response has no answer records.
Authority
shawcable.net. 60 SOA ns7.no.cg.shawcable.net. dnsadmin.shaw.ca. 2003246003 10800 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0