ns.auto.sumy.ua has no MX records.
Question and response
Question
dig ns.auto.sumy.ua. MX
Answer
The response has no answer records.
Authority
auto.sumy.ua. 10800 SOA ns.dl.sm.ua. hostmaster.auto.sumy.ua. 2020110202 21600 3600 1382400 10800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0