mx.mommymae.com has no NS records.
NS records for this zone are defined at mommymae.com.
NS records for this zone are defined at mommymae.com.
Question and response
Question
dig mx.mommymae.com. NS
Answer
The response has no answer records.
Authority
mommymae.com. 3600 SOA dns.mommymae.com. hostmaster.mommymae.com. 1361455546 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0