omzsmtpe02.verizonbusiness.com has no NS records.
NS records for this zone are defined at verizonbusiness.com.
NS records for this zone are defined at verizonbusiness.com.
Question and response
Question
dig omzsmtpe02.verizonbusiness.com. NS
Answer
The response has no answer records.
Authority
verizonbusiness.com. 300 SOA auth-ns1.verizonbusiness.com. hostmaster.verizonbusiness.com. 38146 600 600 1555200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0