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Exchange 2000 mailbox size discrepancies

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by ra?

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Running native multi-server EE Exchange 2000 SP3 w/ Outlook 2000 clients. When a client reaches a standard mailbox limit Exchange sends out a system message warning that the client has reached its mailbox limit, lets say 50MB/mailbox. When you compare the exchange limit to the actual Outlook mailbox size they are quite different. 25MB vs 50MB limit? Any ideas on what could be causing this and how to correct it. Thanks.

2 replies

by a.grogan

Bit of a strange one this, as far as I can tell the Exchange System manger takes a snap shot of the mb at a given time, and then does not update until the next interval (for example the mail box manager process) - you can run the clean up agent but this does not always help.
Things that make this reading worse include fragmentation in the store, deleted item retention, and rules.
Normally I goto the M: drive and select a properties on the mailbox.

by q2ggirl

That mailbox size is based on everything from inbox, sent mail, deleted mail, etc.

The only thing that I have seen give an inaccurate size are PST files. The file may show 100MB in size, even after deleting a ton of files. For those you have to go to right-click on the folder and instead of selecting folder size, select Advanced\Compact now. Then the accurate size will show.

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