Experts, I have already ask this question and thought the issue was resolved but it is not. I am the full-time network admin over a Windows SBS 2003 box at my church. The server is running Windows SBS 2003 and exchange 2003 service pack 2 and the problem is If I'm inside the LAN, trying to connect to the exchange server via IMAP, I cannot access the users exchange email. However, If I go outside the LAN, for example from someone's home, using the same set up they can access their exchange mail account via IMAP.
All the clients desktop are using Outlook or Entourage with an exchange server setup and sending/receiving email with no problem. I thought about creating a DNS record listing our mail server name, but when I try to do that, I cannot create (for example) mail.mymail.org...it ends up being mail.mymail.org.internalnetname.net. How can I setup IMAP so it works inside the LAN?