mx4.intecracy.com has no CNAME records.
Question and response
Question
dig mx4.intecracy.com. NS
Answer
The response has no answer records.
Authority
intecracy.com. 1279 SOA ns.softline.kiev.ua. root.intecracy.com. 2026021200 28800 3600 1209600 19200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0