mailoutb.myrasec.de has no NS records.
NS records for this zone are defined at myrasec.de.
NS records for this zone are defined at myrasec.de.
Question and response
Question
dig mailoutb.myrasec.de. NS
Answer
The response has no answer records.
Authority
myrasec.de. 2560 SOA a.myradns.de. support.myrasecurity.com. 2773402966 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0