dns2.cidc.telus.com has no MX records.
Question and response
Question
dig dns2.cidc.telus.com. MX
Answer
The response has no answer records.
Authority
cidc.telus.com. 86400 SOA dns1.cidc.telus.com. support.cidc.telus.com. 2024051401 300 300 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0