Hi again, Is there anyway I can retrieve the exact Number of Users in our Exchange Server 2003. thanks

If you go to Active Directory Users and Computers, make a new query. When you go to define a query, select, Users, Contacts and Groups. Then click the Exchange tab, and Users With Exchange mailbox.Mark Morowczynski|MCT| MCSE 2003:Messaging, Security|MCITP:ES, SA,EA|MCTS:Windows Mobile Admin|Security+|http://almostdailytech.com

Orpragmaticallyif you have windows powershell installed on any of the workstation then open it and run below cmdlet to get list of mailboxes on a server and the mailbox count. Get list of all mailboxes of an Exchange 2003 server GWMI -NameSpace Root\MicrosoftExchangeV2 -Class Exchange_Mailbox -ComputerName "Exchange2k3ServerName" | FT mailboxdisplayname Get number of mailboxes of an Exchange 2003 server (GWMI -NameSpace Root\MicrosoftExchangeV2 -Class Exchange_Mailbox -ComputerName "Exchange2k3ServerName" | select mailboxdisplayname | measure-object).countAmit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com