mail0.vhost.hu has no CNAME records.
Question and response
Question
dig mail0.vhost.hu. NS
Answer
The response has no answer records.
Authority
vhost.hu. 1021 SOA ns1.e-tiger.net. hostmaster.e-tiger.net. 2025071300 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0