apache.o4s-hosting.nl has no MX records.
Question and response
Question
dig apache.o4s-hosting.nl. MX
Answer
The response has no answer records.
Authority
o4s-hosting.nl. 900 SOA nsauth1.o4s.nl. hostmaster.o4s.nl. 2024031504 28800 7200 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0