mailrelay.pcextreme.nl has no MX records.
Question and response
Question
dig mailrelay.pcextreme.nl. MX
Answer
The response has no answer records.
Authority
pcextreme.nl. 300 SOA ns081.auroradns.eu. admin.auroradns.eu. 2024121301 43200 7200 2419200 300
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0