mail.vadavo.net has no MX records.
Question and response
Question
dig mail.vadavo.net. MX
Answer
The response has no answer records.
Authority
vadavo.net. 86400 SOA ns1.nubedns.com. sistemas.vadavo.com. 2026020400 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0