ns2.ks-host.com has no MX records.
Question and response
Question
dig ns2.ks-host.com. MX
Answer
The response has no answer records.
Authority
ks-host.com. 3600 SOA ho1.ns.ks.ua. hostmaster.ks-host.com. 2026022201 28800 3600 604800 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0