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What will happen if I set all mailbox size limits back to exchange defaults on a network if a user's mailbox is greater than the default amount.

I don't personally want to try this, but do I have to get everyone under the new default size before I can use powershell to set everyone back to defaults.

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What do you mean "set the sizes"? You can lower the size limits, and what happens is people can't send/receive email anymore (depending which limit you change), but the sizes won't change. If you want to shrink them, you need to delete content from them.

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Sorry, I mean mailbox size limit for users on the network – Mike Kellogg Apr 30 '13 at 13:43
oh ok so if they are over the limit they just can't send/receive email? – Mike Kellogg Apr 30 '13 at 13:52
@MikeKellogg - Yes – Ramhound Apr 30 '13 at 15:25

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