OpenMsgStore API

OpenMsgStore API returns MAPI_E_FAILONEPROVIDER in different doamin with exchange server 2007

Hi, we have an application that read the data from exchange server using MAPI API. we have installed the Exchange server 2007 in xyz.co.in domain. when we run that application from a machine having the same doamin as exchange server domain(xyz.co.in) The OpenMsgStore API is working properly....