mail.gmmexicali.com has no NS records.
NS records for this zone are defined at gmmexicali.com.
NS records for this zone are defined at gmmexicali.com.
Question and response
Question
dig mail.gmmexicali.com. NS
Answer
The response has no answer records.
Authority
gmmexicali.com. 10800 SOA ns1.lumenet.com.mx. eserrano.gmmexicali.mx. 2026011801 10800 3600 604800 10800
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0