XADM: Mailbox Item and Size Counts Are Incorrect

When you review Mailbox resources in the Microsoft Exchange Server Administrator program, the Item Count and Mailbox size may appear inconsistent with the actual number or size of items in the mailbox.

When you open a mailbox item, modify it, and then save the changes, the number of items in the mailbox is incremented and the size is increased according to the item size unnecessarily.

To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The following files are available for download from the Microsoft Download Center:
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.