mail.knossos.net.nz has no MX records.
Question and response
Question
dig mail.knossos.net.nz. MX
Answer
The response has no answer records.
Authority
knossos.net.nz. 300 SOA ns1.liverton.net.nz. dns.liverton.net.nz. 2023022001 43200 7200 2419200 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0