In postfix, I'd like a way to deal with e-mail accounts that are no longer active by having postfix send the standard "Recipient address rejected" type message, but still forwarding the e-mail to another user.  Thus, if someone sends an e-mail to 
[email protected], it will bounce the message back to the sender for future reference, but the mail will still get forwarded to 
[email protected] to deal with.   .vacation and / or .forward files let me down because they will either reply or forward, but not both.  Any tips?