server.travelkudos.com has no MX records.
Question and response
Question
dig server.travelkudos.com. MX
Answer
The response has no answer records.
Authority
travelkudos.com. 600 SOA ns31.domaincontrol.com. dns.jomax.net. 2025080102 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0