I have one Exchange 2007 server. My phone system is configured to send voicemail to email. This has been working fine until recently. Before the issue the email would have a WAV file attached with the voicemail message... Pretty simple!! Now, the email comes in with an attachment, but it is a .MSG. If you open the attached .MSG the WAV file is with it. The issue with that is Blackberry users cannot open the attached MSG file to get to their voicemail. I have already posted this issue with no success here:
As a side note, when the email comes in Outlook classifies the email as a Unified Message, but I am not using Unified Messaging nor is it configured... To my knowledge...