pool.a3bc.nl has no MX records.
Question and response
Question
dig pool.a3bc.nl. MX
Answer
The response has no answer records.
Authority
pool.a3bc.nl. 10800 SOA ns1.a3bc.nl. hostmaster.a3bc.nl. 2024090500 3600 900 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0