kpud.net has no MX records.
Question and response
Question
dig kpud.net. MX
Answer
The response has no answer records.
Authority
kpud.net. 7200 SOA ns1.noanet.net. hostmaster.kpud.net. 2026020902 900 7200 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0