mx.jelecoshosting.com has no NS records.
NS records for this zone are defined at jelecoshosting.com.
NS records for this zone are defined at jelecoshosting.com.
Question and response
Question
dig mx.jelecoshosting.com. NS
Answer
The response has no answer records.
Authority
jelecoshosting.com. 3600 SOA dns.jelecoshosting.com. hostmaster.jelecoshosting.com. 1321168460 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0