www.hosteurope.de has no MX records.
Question and response
Question
dig e90878.dsca.akamaiedge.net. MX
Answer
The response has no answer records.
Authority
dsca.akamaiedge.net. 1000 SOA n0dsca.akamaiedge.net. hostmaster.akamai.com. 1773084805 1000 1000 1000 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0