ns2.nodesecure.de has no MX records.
Question and response
Question
dig ns2.nodesecure.de. MX
Answer
The response has no answer records.
Authority
nodesecure.de. 172800 SOA any1.nodesecure.com. domain-support.internetx.de. 2025051403 43200 7200 1209600 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0