With Exchange 2000 server standard edition, I tried to create a second mailbox store in the first storage group, which has only the default mailbox and public stores. But I encountered an error " The storage group already contains the maximum number of stores allowed. Id no: c1034a7a Exchange system manager. So I created a second storage group in order to create a new mailbox store. But I got the same error. There aren’t any stores in the second storage group at all. Please help!