mx.digi.ro has no CNAME records.
Question and response
Question
dig mx.digi.ro. NS
Answer
The response has no answer records.
Authority
digi.ro. 3566 SOA ns.rdsnet.ro. dns-adm.rdsnet.ro. 2026022001 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0