mx.thecitimanagement.com has no NS records.
NS records for this zone are defined at thecitimanagement.com.
NS records for this zone are defined at thecitimanagement.com.
Question and response
Question
dig mx.thecitimanagement.com. NS
Answer
The response has no answer records.
Authority
thecitimanagement.com. 3600 SOA dns.thecitimanagement.com. hostmaster.thecitimanagement.com. 1133478400 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0