When I try to access the voicemail box of a user then the message is played "The Message server is offline.You can play the voice message you have received during outage.After the outage you will be able to access all the messages" then I am able to listen to the vociemails left so far but these voicemails are not getting delivered in the mailbox of the user.
I am using
Cisco Unity 7.0 (Unified Messaging without failover)
Microsoft Exchange 2007
Please advise me how should I proceed to fix the problem.