ns.oxemis.com.oximailing.com has no MX records.
Question and response
Question
dig ns.oxemis.com.oximailing.com. MX
Answer
The response has no answer records.
Authority
oximailing.com. 38400 SOA ns.oxemis.com.oximailing.com. webmaster.oxemis.com. 2025042201 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0