mx.portalcit.org has no NS records.
NS records for this zone are defined at portalcit.org.
NS records for this zone are defined at portalcit.org.
Question and response
Question
dig mx.portalcit.org. NS
Answer
The response has no answer records.
Authority
portalcit.org. 3600 SOA dns.portalcit.org. hostmaster.portalcit.org. 1717951447 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0