mts.mb.ca has no MX records.
Question and response
Question
dig mts.mb.ca. MX
Answer
The response has no answer records.
Authority
mts.mb.ca. 900 SOA dns1.mts.net. dnsadmin.bellmts.net. 2013070791 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0