ar113.xvserver.com has no MX records.
Question and response
Question
dig ar113.xvserver.com. MX
Answer
The response has no answer records.
Authority
ar113.xvserver.com. 3600 SOA ns1.outdns.net. hostmaster.ar113.xvserver.com. 2020070908 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0