mx13.my.games has no MX records.
Question and response
Question
dig mx13.my.games. MX
Answer
The response has no answer records.
Authority
my.games. 300 SOA ns-1.geo.my.games. geo.my.games. 1 3600 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0