This is a continuation of Prevent Outlook from automatically deleting meeting emails
which based on my interpretation, did not yield resolution. Tools -> Options -> E-mail Options -> Advanced E-mail Options, "Delete meeting request from Inbox when responding" is unchecked, as it should be.
Scenario is as follows (both users are using a locally hosted Exchange server) - User A, using the Outlook 2010 SP1 Windows application, creates a meeting request for User B. User B receives a copy of the request via email and on his smartphone. The e-mail invitation User B received never hits User A's inbox, and is instead in his deleted items folder.
I also found this http://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/9be3e009-4150-4dc2-809e-a7974b31aac9
and I plan on attempting that later this afternoon. Just curious if anyone else has encountered this. It's...rather bizarre.