Here is how send/receive quotas impact things:
Quota Handling for Outside Caller Messages
By default, if an outside caller attempts to send a message to a user whose send/receive quota has been exceeded, Cisco Unity Connection allows the caller to record a message for the recipient. This can be changed by checking the Full Mailbox Check for Outside Caller Messages check box on the System Settings > Advanced > Conversation page.
If the recipient mailbox has not yet exceeded the send/receive quota at the time an outside caller records a message, but the quota is exceeded in the act of delivering the message, Connection delivers the message regardless of the quota or the setting of the Full Mailbox Check for Outside Caller Messages check box.
Quota Handling for User-to-User Messages
If a user whose voice mailbox has exceeded the send quota signs in to Connection and attempts to send a message to another user, Connection indicates that the send quota has been exceeded, and does not allow the sender to record the message. If the user calls another user and is forwarded to a voice mailbox, the user is able to leave a message, but the message is sent as an outside caller message.
If a user attempts to send a message to another user whose mailbox has exceeded the send/receive quota, or if the quota is exceeded in the act of delivering the message, Connection sends a nondelivery receipt to the message sender.
Connection delivers read receipts and nondelivery receipts to users regardless of whether their quotas have been exceeded.
HTH,
Chris
