mail4.geneva.hosting has no CNAME records.
Question and response
Question
dig mail4.geneva.hosting. NS
Answer
The response has no answer records.
Authority
geneva.hosting. 226 SOA ns1.geneva.hosting. dns.csti-ch.net. 2026022603 10801 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0