smtp1.flexiconf.com has no NS records.
NS records for this zone are defined at flexiconf.com.
NS records for this zone are defined at flexiconf.com.
Question and response
Question
dig smtp1.flexiconf.com. NS
Answer
The response has no answer records.
Authority
flexiconf.com. 180 SOA ns1.iptox.net. hostmaster.iptox.net. 2025122701 3600 3600 604800 180
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0