We are currently exploring an opportunity with a new customer to deploy an MS Server 2003 Standard Edition server together with Exchange Server 2003 Standard Edition. The customer has asked us what the maximum number of contacts would be that Exchange 2003 can store. We had found in our research that MS Outlook 2003 supposedly only holds up to 10,000 contacts. Would anyone be able to tell me what the maximum is for Exchange 2003? Thanks in advance, Oliver