[Exchange 2013]Does not exchange support widecard smtp address?

Hi ,everyone,

I am trying to make exchange 2013 works in following way:

We have several email address for public , like  

help@mycustomersupport.com,

help1@mycustomersupport.com,

        ........

I want all of above email received, go to  the mailbox with default smtp address customersupport@mydomain.com.

I am trying to accomplish in this way:

1.  the exchange default domain is mydomain.com

2. Add  mycustomersupport.com as authorized accept domain.

3. update mailbox customersupport@mydomain.com, add a  smtp address binging to "*@mycustomersupport.com" 

But it does not work,

Exchange reply NDR for user mailbox not found , testing with email send to help@mycustomersupport.com

Would anyone suggest any approach? Does exchange support widecard smtp like *@mycustomersupport.com?