wapppool0.airscorp.com has no MX records.
Question and response
Question
dig wapppool0.airscorp.com. MX
Answer
The response has no answer records.
Authority
airscorp.com. 60 SOA dc01exdnsgm.net.adp.com. hostmaster.adp.com. 2013123399 10800 3600 2592000 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0