ns2.subnet.zp.ua has no MX records.
Question and response
Question
dig ns2.subnet.zp.ua. MX
Answer
The response has no answer records.
Authority
subnet.zp.ua. 10800 SOA subnet.zp.ua. hostmaster.subnet.zp.ua. 2024092301 86400 43200 604800 10800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0