mailserver.evenito.com has no CNAME records.
Question and response
Question
dig mailserver.evenito.com. NS
Answer
The response has no answer records.
Authority
evenito.com. 2394 SOA ns-a.eurodns.com. hostmaster.eurodns.com. 2026021500 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0