mx.johnmichaelkeller.com has no NS records.
NS records for this zone are defined at johnmichaelkeller.com.
NS records for this zone are defined at johnmichaelkeller.com.
Question and response
Question
dig mx.johnmichaelkeller.com. NS
Answer
The response has no answer records.
Authority
johnmichaelkeller.com. 3600 SOA dns.johnmichaelkeller.com. hostmaster.johnmichaelkeller.com. 1355063704 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0