o1.default.yourlearningportal.com has no MX records.
Question and response
Question
dig o1.default.yourlearningportal.com. MX
Answer
The response has no answer records.
Authority
yourlearningportal.com. 600 SOA pdns07.domaincontrol.com. dns.jomax.net. 2025040700 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0