smtp.databay.de has no CNAME records.
Question and response
Question
dig smtp.databay.de. NS
Answer
The response has no answer records.
Authority
databay.de. 3284 SOA ns.databay.de. hostmaster.databay.de. 2026021101 86400 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0