nex.uranus.fi has no MX records.
Question and response
Question
dig nex.uranus.fi. MX
Answer
The response has no answer records.
Authority
uranus.fi. 300 SOA ns1.laura.fi. hostmaster.rekrytointi.com. 202308141 7200 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0