smtprelay.ascio.com has no MX records.
Question and response
Question
dig smtprelay.ascio.com. MX
Answer
The response has no answer records.
Authority
ascio.com. 300 SOA ns1.tucows.com. hostmaster.tucows.com. 1771818629 1800 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0