ns3.domainers.de has no MX records.
Question and response
Question
dig ns3.domainers.de. MX
Answer
The response has no answer records.
Authority
domainers.de. 300 SOA ns1.domainers.de. hostmaster.internetwire.de. 2025110501 28800 7200 604800 300
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0