netcup02.theravenhub.com has no MX records.
Question and response
Question
dig netcup02.theravenhub.com. MX
Answer
The response has no answer records.
Authority
theravenhub.com. 1800 SOA cartman.ns.cloudflare.com. dns.cloudflare.com. 2397626320 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0