ns1.regzone.info has no MX records.
Question and response
Question
dig ns1.regzone.info. MX
Answer
The response has no answer records.
Authority
regzone.info. 3600 SOA ns1.regzone.cz. administrator.czechia.cz. 2026021704 10800 1800 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0