smtpjk3.cgsi.co.id has no MX records.
Question and response
Question
dig smtpjk3.cgsi.co.id. MX
Answer
The response has no answer records.
Authority
cgsi.co.id. 900 SOA idgspwinxftx201. hostmaster. 122 900 600 86400 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0