mail.mailvexo.store has no NS records.
NS records for this zone are defined at mailvexo.store.
NS records for this zone are defined at mailvexo.store.
Question and response
Question
dig mail.mailvexo.store. NS
Answer
The response has no answer records.
Authority
mailvexo.store. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1772664352 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0