ifxnetworks.com has no MX records.
Question and response
Question
dig ifxnetworks.com. MX
Answer
The response has no answer records.
Authority
ifxnetworks.com. 180 SOA ns11.constellix.com. dns.constellix.com. 2015010568 43200 3600 1209600 180
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0