vps63136.dreamhostps.com has no MX records.
Question and response
Question
dig vps63136.dreamhostps.com. MX
Answer
The response has no answer records.
Authority
dreamhostps.com. 300 SOA ns1.dreamhost.com. hostmaster.dreamhost.com. 2026030712 2134 1800 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0