pmg-2.snap.net.nz has no MX records.
Question and response
Question
dig pmg-2.snap.net.nz. MX
Answer
The response has no answer records.
Authority
snap.net.nz. 86400 SOA ns1.snap.net.nz. soa.snap.net.nz. 2026012205 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0