Quick question for radmin_h..
When you are creating the co-domain for * example.com are you checking the option for ISPConfig to create the DNS records for you?
I'm still having problems with getting it to re-write, using a recently updated ISPConfig setup with the same details from above, i'm including the user_rewrite.conf in the Apache Directives in ISPConfig via:
My DNS info for my domain currently:
Does this appear to be correct?