mail.pcextreme.nl has no MX records.
Question and response
Question
dig mail.pcextreme.nl. MX
Answer
The response has no answer records.
Authority
mail.pcextreme.nl. 3600 SOA ns051.auroradns.eu. hostmaster.pcextreme.nl. 2024021501 4800 3600 1209600 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0