vl200.core-2.xlhost.com has no MX records.
Question and response
Question
dig vl200.core-2.xlhost.com. MX
Answer
The response has no answer records.
Authority
xlhost.com. 86400 SOA dns4.ee.net. hostmaster.ee.net. 2017030854 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0