mail.emlgrid.com has no NS records.
NS records for this zone are defined at emlgrid.com.
NS records for this zone are defined at emlgrid.com.
Question and response
Question
dig mail.emlgrid.com. NS
Answer
The response has no answer records.
Authority
emlgrid.com. 1800 SOA lynn.ns.cloudflare.com. dns.cloudflare.com. 2396218489 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0