On Sat, Oct 04, 2014 at 11:25:46AM +0200, giacomo wrote: > The catch...@realdomain.com receive all mail for @realdomain.com. > For now I use an internal mail server (HMailServer) that reads > and split each messages into the respective mailboxes. > > I would do the same thing with postfix.
Your upstream server does not support multi-drop mailboxes. It loses critical recipient information, by not recording the original *envelope* recipient routed to the catchall mailbox. What you want is NOT POSSIBLE without changes in upstream mail handling. -- Viktor.