Hello everyoneI have 1 domain example.comI want to point all subdomain of example.comeg abc.example.com, cde.example.com .....
All will using hosting at Dreamhost
You will either need a Dreamhost dedicated server or a DreamCompute instance. This can't be done for certain via shared hosting, and I'm 99% certain you can't with a dreamhost VPS.
If you're interested in pursuing this, this stackoverflow question may be of assistance.