ns2.philadelphiatechnologypark.com has no MX records.
Question and response
Question
dig ns2.philadelphiatechnologypark.com. MX
Answer
The response has no answer records.
Authority
philadelphiatechnologypark.com. 600 SOA ns1.ral.hostedsolutions.com. hostmaster.hostedsolutions.com. 2013041230 10800 3600 604800 600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0