mx00.sovendus.com has no CNAME records.
Question and response
Question
dig mx00.sovendus.com. NS
Answer
The response has no answer records.
Authority
sovendus.com. 2444 SOA europe1.sovdns.net. hostmaster.adacor.net. 2026022307 10000 1800 604800 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0