smtp.harley-davidson.com has no NS records.
NS records for this zone are defined at harley-davidson.com.
NS records for this zone are defined at harley-davidson.com.
Question and response
Question
dig smtp.harley-davidson.com. NS
Answer
The response has no answer records.
Authority
harley-davidson.com. 86400 SOA udns1.ultradns.net. ken.ostermann.harley-davidson.com. 2012057301 10800 3600 2592000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0