136-206.trifle.net has no MX records.
Question and response
Question
dig 136-206.trifle.net. MX
Answer
The response has no answer records.
Authority
trifle.net. 3600 SOA ns.apex.dp.ua. hostmaster.trifle.net. 2020083633 36000 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0