smtp1.speednames.com has no NS records.
NS records for this zone are defined at speednames.com.
NS records for this zone are defined at speednames.com.
Question and response
Question
dig smtp1.speednames.com. NS
Answer
The response has no answer records.
Authority
speednames.com. 3600 SOA dn1.webportalpro.com. ithelpdesuk.web.com. 0 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0