outgoing.truecorp.co.th has no MX records.
Question and response
Question
dig outgoing.truecorp.co.th. MX
Answer
The response has no answer records.
Authority
truecorp.co.th. 3600 SOA conductor.asianet.co.th. admindns.asianet.co.th. 2026022000 28800 7200 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0