tm.net.my has no MX records.
Question and response
Question
dig tm.net.my. MX
Answer
The response has no answer records.
Authority
tm.net.my. 600 SOA ns1.tm.net.my. dnsadm.tm.com.my. 2012271170 10800 3600 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0