mail.maxer.hu has no CNAME records.
Question and response
Question
dig mail.maxer.hu. NS
Answer
The response has no answer records.
Authority
maxer.hu. 2346 SOA ns1.maxer.hu. hostmaster.maxer.hu. 2026021200 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0