mail.nshost2.de has no MX records.
Question and response
Question
dig mail.nshost2.de. MX
Answer
The response has no answer records.
Authority
nshost2.de. 3600 SOA ns1.nshost2.de. hostmaster.webhostone.de. 2011050188 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0