ns.spoje.net has no MX records.
Question and response
Question
dig ns.spoje.net. MX
Answer
The response has no answer records.
Authority
spoje.net. 3600 SOA ns.spoje.net. tech.spoje.net. 1771956096 3600 600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0