We are running Outlook 2007 clients on Exchange 2010.
When searching within Outlook (using the native Outlook 2007 mail search bar), within any folder/location (Inbox, Sent, etc), Outlook seemingly randomly deletes email messages. And it deletes them permanently (not in Deleted Items, or the 'Recover Deleted Items...' menu). It happens after you search and start to click through the search results. They just disappear/clear from the search results, and are no longer to be found in the mailbox via manual or search methods.
I have not been able to intentionally re-create this. However, I have experienced this personally, as well as have at least two other higher-up staff.
Has anyone else experienced this and/or have any idea on how to prevent this? It is very frustrating and a potential liability concerning legal email retention. Also, any ideas on recovering the missing messages?