Thanks for your replies. I am aware that email pseudonyms can be delagated to users, but this is not 'catch all'.
This will take quite a while to setup with pseudonyms (Especially when most of them are pointing to the same user)
In my installation this is not ideal, but will have to do for now. I am still interested in a 'catch all' option for domains and virtual domains if anyone has a simple way to do it.
Thank you,
Pete.