Hi, I have just recently installed 3 new Windows 2003 Servers. A File Server, a Database Server, and the reason for this email an Exchange 2003 Server. When using Outlook 2003 to send emails to internal clients or external the email goes to the Outbox and on its way then I'm able to see the sent email in Sent Items. However while monitoring within System Manager the Mailbox items for the user receiving the email I'm able to see the number of messages increment by one but the email never shows up in the Inbox of the Receipent. I'm not using cached mode with Outlook 2003. So with that being said does anyone have any suggestions as to why the email is not showing up in the Inbox. I read in a posted email where the question was asked about ISA server and email problems. I must admit I uninstalled ISA Server from one of the servers shortly after loading it but did not test email afterwards. Everything else seems to be working fine though such as Internet, FTP, etc. Please HELP!!!