Postfix on 10.3:virtual accounts

I have set up virtual email accounts as per the AFP article and all works well. What I was wondering was, is it possible to set up separate accounts for one user? For example: user = mike 2 domains: domain1 and domain2 virtual users= mike@domain1 and mike@domain2 if i set up my mail app to receive mail for mike@domain1 I also recieve mail for mike@domain2. also i receive all the mail for the virtual container, ie. mike@domain1, webmaster@domain1, support@domain1 I know I could create a new user but I would like to avoid that. Seems there should be a way to achieve this, maybe i set up my virtual accounts wrong? thanks Mike