mail115.din211.mcssv.com has no NS records.
NS records for this zone are defined at mcssv.com.
NS records for this zone are defined at mcssv.com.
Question and response
Question
dig mail115.din211.mcssv.com. NS
Answer
The response has no answer records.
Authority
mcssv.com. 300 SOA ns-cloud-a1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0