ns13.1baht.net has no MX records.
Question and response
Question
dig ns13.1baht.net. MX
Answer
The response has no answer records.
Authority
1baht.net. 1800 SOA joan.ns.cloudflare.com. dns.cloudflare.com. 2398125121 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0