Over the last couple of weeks I have seen increasing numbers of the following messages appearing in our system admin account (a pair of messages every few minutes for 2 of our servers). This appears to relate to public folder sync but I am at a lost to understand why this is happening now or what permissions to what object/folder it is talking about. The 2 servers affected are both front end Exchange 2003 servers but I am not aware of any changes to their config or patches etc applied recently but obviously something has changed somewhere on the system. The M$ knowledge base doesn't seem to have anything relevant (or I haven't entered the correct cryptic search terms to find the relevant info!). Can anyone point me in the right direction for info or method of diagnosing this. -------- ERROR MESSAGE RECEIVED ------- From: System Administrator Sent: 05 May 2005 14:03 To: Public Folder Store (UEL-MAIL1) Subject: Undeliverable: Hierarchy Your message did not reach some or all of the intended recipients. Subject: Hierarchy Sent: 05/05/2005 14:03 The following recipient(s) could not be reached: Public Folder Store (UEL-MAIL1) on 05/05/2005 14:03 You do not have permission to send to this recipient. For assistance, contact your system administrator. <uel-mail1.uel.ac.uk #5.7.1> -------- END OF ERROR MESS --------