mail02.jtglobal.com has no MX records.
Question and response
Question
dig mail02.jtglobal.com. MX
Answer
The response has no answer records.
Authority
jtglobal.com. 60 SOA ns0.jtibs.net. ops.jtibs.net. 2026021600 7200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0