smtp.harriscomputer.io has no NS records.
NS records for this zone are defined at harriscomputer.io.
NS records for this zone are defined at harriscomputer.io.
Question and response
Question
dig smtp.harriscomputer.io. NS
Answer
The response has no answer records.
Authority
harriscomputer.io. 1800 SOA paul.ns.cloudflare.com. dns.cloudflare.com. 2394140995 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0