mail.jb80.net has no MX records.
Question and response
Question
dig mail.jb80.net. MX
Answer
The response has no answer records.
Authority
jb80.net. 86400 SOA dns17.ovh.net. tech.ovh.net. 2025021900 86400 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0