ns3.nframe.com has no MX records.
Question and response
Question
dig ns3.nframe.com. MX
Answer
The response has no answer records.
Authority
nframe.com. 3600 SOA auth1.dns.expedient.com. hostmaster.expedient.com. 2013041802 3600 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0