mx.throwoutthebums.com has no NS records.
NS records for this zone are defined at throwoutthebums.com.
NS records for this zone are defined at throwoutthebums.com.
Question and response
Question
dig mx.throwoutthebums.com. NS
Answer
The response has no answer records.
Authority
throwoutthebums.com. 3600 SOA dns.throwoutthebums.com. hostmaster.throwoutthebums.com. 1280569451 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0