ns.seppmail.ch has no CNAME records.
Question and response
Question
dig ns.seppmail.ch. NS
Answer
The response has no answer records.
Authority
seppmail.ch. 372 SOA ns.seppmail.cloud. hostmaster.seppmail.cloud. 2026030501 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0