mx2.mydomain.ro has no CNAME records.
Question and response
Question
dig mx2.mydomain.ro. NS
Answer
The response has no answer records.
Authority
mydomain.ro. 234 SOA ns1.meganameservers.eu. postmaster.meganameservers.eu. 2010062227 600 3600 3600000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0