th-mta01.thai.com has no MX records.
Question and response
Question
dig th-mta01.thai.com. MX
Answer
The response has no answer records.
Authority
thai.com. 300 SOA ns01.inet.co.th. root.thai.com. 2321 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0