wp-roy6.rackspeed-cloud.de has no MX records.
Question and response
Question
dig wp-roy6.rackspeed-cloud.de. MX
Answer
The response has no answer records.
Authority
rackspeed-cloud.de. 3600 SOA ns.rackspeed-cloud.de. 2ndlevel.rackspeed.de. 2026030201 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0