cp01-ga.privatesystems.net has no MX records.
Question and response
Question
dig cp01-ga.privatesystems.net. MX
Answer
The response has no answer records.
Authority
privatesystems.net. 3600 SOA ns1.privatesystems.net. dns.privatesystems.net. 2026022601 3600 1800 1814400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0