hsia.telus.net has no MX records.
Question and response
Question
dig hsia.telus.net. MX
Answer
The response has no answer records.
Authority
hsia.telus.net. 3600 SOA dns21.telus.com. dnsadmin2.telus.com. 2018053003 900 7200 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0