vps42773.dreamhostps.com has no MX records.
Question and response
Question
dig vps42773.dreamhostps.com. MX
Answer
The response has no answer records.
Authority
dreamhostps.com. 300 SOA ns1.dreamhost.com. hostmaster.dreamhost.com. 2026030220 1753 1800 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0