outgoing-devfarm.ariasystems.net has no MX records.
Question and response
Question
dig outgoing-devfarm.ariasystems.net. MX
Answer
The response has no answer records.
Authority
ariasystems.net. 60 SOA ns1.ariasystems.net. hostmaster.ariasystems.net. 2026000011 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0