auth03.dns.xand.com has no MX records.
Question and response
Question
dig auth03.dns.xand.com. MX
Answer
The response has no answer records.
Authority
xand.com. 60 SOA ns1.ral.hostedsolutions.com. hostmaster.hostedsolutions.com. 2017040443 1200 600 2419200 600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0