mx.abwadelaware.com has no NS records.
NS records for this zone are defined at abwadelaware.com.
NS records for this zone are defined at abwadelaware.com.
Question and response
Question
dig mx.abwadelaware.com. NS
Answer
The response has no answer records.
Authority
abwadelaware.com. 3600 SOA dns.abwadelaware.com. hostmaster.abwadelaware.com. 1604694941 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0