ns2.dxtremz.com has no MX records.
Question and response
Question
dig ns2.dxtremz.com. MX
Answer
The response has no answer records.
Authority
dxtremz.com. 3600 SOA ns1.dxtremz.com. hostmaster.dxtremz.com. 2023102500 3600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0