Well here it goes...
We are running Outlook 2003 on VIsta and Exchange 2003. Lately when someone send an appointment from one of our shared calendars and a user and the user accepts the appointment they are getting a bounce back. Please see below:
Your message did not reach some or all of the intended recipients.
Subject: Accepted: Bob Ad Mtg
Sent: 11/6/2007 11:43 AM
The following recipient(s) could not be reached:
Research Calendar on 11/6/2007 11:43 AM
The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.
I found an article at Microsoft about this error here -->
This article points at Outlook delegates being the issue, but these users claim they never had outlook delegates (and i shouldn't trust users anyway)
Any ideas on what could be the cause of this issue?