We recently had an event where mailbox on our Exchange server and one outside were playing catch, forwarding an email back and forth to each other. In a three day period the mailbox size reached 13.5GB. We hit our defined private store limit (20GB - Exchange 2K3, sp2) and raised it to 40GB while researching the problem. After fixing the email volley, we deleted the affected box, recreated it and purged it. The size now shows as zero in the ESM. I would then expect the online defrag to show the 13.5GB as white space, but it is only showing 2550 MB instead. Am I missing something? In addition, our backup software (Arcserve) stalls when trying to calculate the session so we're not getting backups.
We plan on taking it down to do an offline defrag later this month, but I need to understand what is happening and what to expect before then.
Thanks in advance!