We have setup and working Unified Messaging as part of our Exchange 2010 setup. The majority of users have voicemail on this. I am sure we are not alone in this issue but when staff are off or away on leave it is common for them to pass the PIN number to other staff they work with so they can access any urgent voicemails, but they would never give them there network login etc. The problem is once you have the PIN you can then listen to the e-mails, so its as good as having the network login in some ways. Is there a way to stop this, i was hope there was something in the policy for this but nothing at all. Any ideas ? Before anyone suggests it, its not a answer to give all users a shared mailbox.