ns.asys-h.de has no MX records.
Question and response
Question
dig ns.asys-h.de. MX
Answer
The response has no answer records.
Authority
asys-h.de. 86400 SOA ns.asys-h.de. root.asys-h.de. 2026030401 86400 7200 604800 86400
Additional
. 0 OPT ; payload 4095, xrcode 0, version 0, flags 0