mail.intern.globvill.de has no CNAME records.
Question and response
Question
dig mail.intern.globvill.de. NS
Answer
The response has no answer records.
Authority
intern.globvill.de. 10800 SOA ns1.globvill.de. hostmaster.globvill.de. 2026022401 18000 7200 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0