j.md.iquinox.net has no MX records.
Question and response
Question
dig j.md.iquinox.net. MX
Answer
The response has no answer records.
Authority
iquinox.net. 38400 SOA ns1.qlc.co.in. root.qlc.co.in. 2011091361 10800 3600 432000 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0