mx02.uat.unifiedpost.com has no MX records.
Question and response
Question
dig mx02.uat.unifiedpost.com. MX
Answer
The response has no answer records.
Authority
uat.unifiedpost.com. 3600 SOA public-ns1.unifiedpost.com. hostmaster.uat.unifiedpost.com. 2025031401 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0