mxpool.de2.hostedoffice.ag has no CNAME records.
Question and response
Question
dig mxpool.de2.hostedoffice.ag. NS
Answer
The response has no answer records.
Authority
de2.hostedoffice.ag. 3383 SOA master.domainkunden.de. hostmaster.domainkunden.de. 2026021101 28800 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0