root.andinanet.net has no MX records.
Question and response
Question
dig root.andinanet.net. MX
Answer
The response has no answer records.
Authority
andinanet.net. 3600 SOA root.andinanet.net. hostmaster.andinanet.net. 2025021701 3600 604800 43200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0