Hello

I use db_filter = *. it is working fine.

I give a subdomain for customers. 

Example:

my domain http://SYS.COM
I gave http://customer1.SYS.COM to customer. DB name is customer1.SYS.COM
But the customer has its own domain. CUSTOMER1.COM.

I need access both  
http://customer1.SYS.COM  => customer1.SYS.COM and
http://CUSTOMER1.COM  => customer1.SYS.COM.

How can I config?