mailsrv.oboyle.ro has no CNAME records.
Question and response
Question
dig mailsrv.oboyle.ro. NS
Answer
The response has no answer records.
Authority
oboyle.ro. 346 SOA pluto.msp.ro. 112.netprotect.ro. 2026022602 7200 540 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0