pma2vmlupsmtp01.acquirebpo.com has no NS records.
NS records for this zone are defined at acquirebpo.com.
NS records for this zone are defined at acquirebpo.com.
Question and response
Question
dig pma2vmlupsmtp01.acquirebpo.com. NS
Answer
The response has no answer records.
Authority
acquirebpo.com. 60 SOA ns-1817.awsdns-35.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0