hi we have a smallorganisation and we are using ERP for mybusiness andorganisationwith 200 employers and we have 50 management officials to manage departments, right now we are using one email provider i.e yahoo and gmail for my office purpose. so i amplanning to get our own E mail ID's for this 50 users with my own organisation . we need without installing microsoft exchange server in my server room. please advice me to implement my requirement

You need to look into using the Microsoft Online Services, http://www.microsoft.com/online/products.mspx.ThanksWillWill Shepherd - MCSE/MCITP/MCTS (Windows 2008,Exchange 2007,OCS 2007)

Since you want support without installing exchange server so this is not the place to get help ;) Just Kidding. You need to look out for ISP and then have them to host Mailboxes for your users. Here is the list of MS partners which can look out. http://www.microsoft.com/hosting/catalog/communication-services.mspx Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|