mx.soledout.net has no NS records.
NS records for this zone are defined at soledout.net.
NS records for this zone are defined at soledout.net.
Question and response
Question
dig mx.soledout.net. NS
Answer
The response has no answer records.
Authority
soledout.net. 3600 SOA dns.soledout.net. hostmaster.soledout.net. 1183249233 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0