mx.londoncitylife.com has no NS records.
NS records for this zone are defined at londoncitylife.com.
NS records for this zone are defined at londoncitylife.com.
Question and response
Question
dig mx.londoncitylife.com. NS
Answer
The response has no answer records.
Authority
londoncitylife.com. 3600 SOA dns.londoncitylife.com. hostmaster.londoncitylife.com. 1797022586 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0