mx.reactionlenses.com has no NS records.
NS records for this zone are defined at reactionlenses.com.
NS records for this zone are defined at reactionlenses.com.
Question and response
Question
dig mx.reactionlenses.com. NS
Answer
The response has no answer records.
Authority
reactionlenses.com. 3600 SOA dns.reactionlenses.com. hostmaster.reactionlenses.com. 1388198884 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0