smtp.simplicity.ro has no CNAME records.
Question and response
Question
dig smtp.simplicity.ro. NS
Answer
The response has no answer records.
Authority
simplicity.ro. 1562 SOA ns2.simplicity.ro. alex.netprotect.ro. 2026011901 28800 7200 10800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0