I checked on our test IPO in the shop, and it appears that deleted voicemail wav files can not be found in the recycle bin. This eliminates my option for finding if the user inadvertantly deleted the voicemail that they claim never came to their VM box.
If the VM license count is exceeded, how is the next caller handled that tries to leave VM? Does VMPro refuse them access to VMPro, or (hopefully not) do something odd like let them record a VM but simply refuse to save it?