mail.domain-robot.org has no CNAME records.
Question and response
Question
dig mail.domain-robot.org. NS
Answer
The response has no answer records.
Authority
domain-robot.org. 3422 SOA any1.nodesecure.com. domain-support.internetx.de. 2025051913 39940 14400 604800 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0