mta00.netplace.com has no MX records.
Question and response
Question
dig mta00.netplace.com. MX
Answer
The response has no answer records.
Authority
netplace.com. 600 SOA dns0.noris.net. hostmaster.noris.net.netplace.com. 1771849624 86400 86400 2419200 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0