ws.kbrod.net has no MX records.
Question and response
Question
dig ws.kbrod.net. MX
Answer
The response has no answer records.
Authority
kbrod.net. 86400 SOA ns.kbrod.net. root.ns.kbrod.net. 2025020502 86400 7200 10000 172800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0