> Just point the nobody alias to 2 user accounts, one of them yours, and the > other one that's set up with an auto-responder explaining the bounce. No > dreaming required. :)
The problem with that is the sender doesn't know the email address that was invalid.
You can add fields to vacation messages for headers, body, and recipient, but if an email is sent to ValidUser@Domain.com and cc'd to UnknownUser@Domain.com the auto-response will say something like:
Invalid User: ValidUser@Domain.com
The only way I can see that this would work would be a nobody alias forwarding to a real account (so you can see the emails) and also forwarding to a program alias. The program alias would have to search the iMail logs to find out the actual intended recipient, and then send a bounce message back to the sender.
T. Bradley Dean (800) 793-8171 Ext. 336 Bradley.Dean@InfoDish.com