pri4.dns.ca.telus.com has no MX records.
Question and response
Question
dig pri4.dns.ca.telus.com. MX
Answer
The response has no answer records.
Authority
ca.telus.com. 1800 SOA pri1.dns.ca.telus.com. hostmaster.dco.psi.ca. 2023083101 7200 300 1209600 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0