You can play any message that is in the cache, including messages that you deleted in the 72 hours before the event that made the storage server unreachable. You can also play any new message from external callers that arrive after the event that made the storage server unreachable. However, while your application server is operating in the offline mode, the system cannot display the message status, that is, unread, read, or saved.
Messages addressed to multiple recipients
The method the sender uses to address a message to multiple recipients affects how the application server caches the message and therefore, whether you can review the message.
If you are the first recipient on an ad hoc list, you can play the message as discussed.
If you are not the first recipient on the list, you will not receive the message until the storage server becomes available.
Your position on personal or system distribution lists is irrelevant. You will not receive these messages until the storage server becomes available. And you cannot play messages that arrived in your mailbox before the event that made the storage server unreachable unless you played the message before the event and caused the application server to cache the message.
Messages from internal callers
You can review new, incoming messages when your application server is in the offline mode if you and the sender have an account on the same application server. You can also review the messages if the sender has an account on a different application server if:
The two application servers are in the same cluster.
The status of both servers is Active in the Sites / Application Servers table on the Topology SMI page.