dynamic-ip.pni.hk has no MX records.
Question and response
Question
dig dynamic-ip.pni.hk. MX
Answer
The response has no answer records.
Authority
dynamic-ip.pni.hk. 38400 SOA ns1.pni.tw. noc.pni.tw. 2025062601 10800 3600 604800 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0