mailcow.epages.systems has no NS records.
NS records for this zone are defined at epages.systems.
NS records for this zone are defined at epages.systems.
Question and response
Question
dig mailcow.epages.systems. NS
Answer
The response has no answer records.
Authority
epages.systems. 21600 SOA ns1.iphh.de. hostmaster.iphh.net. 1773997215 28800 7200 1209600 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0