ip-64-237-83-127.dynamic.eatel.net has no MX records.
Question and response
Question
dig ip-64-237-83-127.dynamic.eatel.net. MX
Answer
The response has no answer records.
Authority
dynamic.eatel.net. 3600 SOA ns8.eatel.net. hostmaster.eatel.net. 324300035 7200 3600 10800 10800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0