mail2.corp.shaw.ca has no MX records.
Question and response
Question
dig mail2.corp.shaw.ca. MX
Answer
The response has no answer records.
Authority
corp.shaw.ca. 600 SOA ns7.no.cg.shawcable.net. dnsadmin.shaw.ca. 8 10800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0