smtp.gilpaimpresores.com has no NS records.
NS records for this zone are defined at gilpaimpresores.com.
NS records for this zone are defined at gilpaimpresores.com.
Question and response
Question
dig smtp.gilpaimpresores.com. NS
Answer
The response has no answer records.
Authority
gilpaimpresores.com. 300 SOA ns1-auth.etb.net.co. postmaster.etb.net.co. 65 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0