I’m running a SBS 2003 with Exchange. Since last few days I noticed Event 9791 warnings appear n the Application log several times every day. And due to this, the mailbox expands 10 times their customary size. Although I can recover the space back again by simply opening the mailbox with Outlook; often export/import of the mailbox. But I wanted to know what is causing that error again and again in every hour?
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