I have had a single Exchange 2003 Standard server running on Server 2003 R2 in a VM. The mailboxes have grown rapidly and filled most of the drive. I added a second exchange 2003 server and move all the user mailboxes to it. The old exchange server is configured as a front end for OWA/OMA, however the information store is still the same size. Can I decrease the size of that database safely? Do I need to abandon that server entirely?