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I am trying to remove several user's mailboxes in the Exchange Server. Exchange Server is on a member server (OS: Window Server 2003). When I try to remove the Administrator mailbox, it says this:

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Note: I had to censor my windows server name where my active director resides (on another machine that has OS Win Server 2008) What does this error mean? Seems like a connection problem from member server to server of active directory, but I am able to ping back and forth. How may I resolve this?

Many thanks.

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You are trying to Delete the builtin domain Administrator account. – HostBits Jul 9 '11 at 2:04
up vote 4 down vote accepted

If you want to get rid of the user's mailbox you want to use Disable and not Remove. The Remove choice actually deletes the user's Active Directory user account (which won't work w/ the RID 500 Administrator account).

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