mta-2.vbu.rdsnet.ro has no CNAME records.
Question and response
Question
dig mta-2.vbu.rdsnet.ro. NS
Answer
The response has no answer records.
Authority
vbu.rdsnet.ro. 7879 SOA dc1new.vbu.rdsnet.ro. lcatalin.vbu.rdsnet.ro. 200861431 1800 1200 172800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0