ns4.amboto.net has no MX records.
Question and response
Question
dig ns4.amboto.net. MX
Answer
The response has no answer records.
Authority
amboto.net. 300 SOA ns5.nsprimario.com. info.webstudio.es. 2021071902 10800 3600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0