service04.commpartners.net has no MX records.
Question and response
Question
dig service04.commpartners.net. MX
Answer
The response has no answer records.
Authority
commpartners.net. 180 SOA ns0.dnsmadeeasy.com. dns.dnsmadeeasy.com. 2006010152 43200 3600 1209600 180
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0