dns3.tinp.net.tw has no MX records.
Question and response
Question
dig dns3.tinp.net.tw. MX
Answer
The response has no answer records.
Authority
tinp.net.tw. 3600 SOA dns.tinp.net.tw. mac.tinp.net.tw. 2025110401 2880 14400 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0