relay.cv.ua has no MX records.
Question and response
Question
dig relay.cv.ua. MX
Answer
The response has no answer records.
Authority
cv.ua. 3600 SOA ns.cv.ua. hostmaster.cv.ua. 2022088028 3636 1212 1814400 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0