pcmsmtp01.yardi.com has no NS records.
NS records for this zone are defined at yardi.com.
NS records for this zone are defined at yardi.com.
Question and response
Question
dig pcmsmtp01.yardi.com. NS
Answer
The response has no answer records.
Authority
yardi.com. 900 SOA ns-1336.awsdns-39.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0