iconz.net.nz has no MX records.
Question and response
Question
dig iconz.net.nz. MX
Answer
The response has no answer records.
Authority
iconz.net.nz. 3600 SOA ns1.iconz.co.nz. soa.iconz.co.nz. 2026021901 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0