mx.office.openfind.com.tw has no CNAME records.
Question and response
Question
dig mx.office.openfind.com.tw. NS
Answer
The response has no answer records.
Authority
office.openfind.com.tw. 1932 SOA dns.office.openfind.com.tw. mis.openfind.com.tw. 2025122201 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0