Common problems when enabling RPC/HTTP(s) in Outlook 2003

These are four of the most common problems I've seen when setting up this configuration:

#1: In the “Exchange server“ field in the first page of the wizard to add an Exchange account, enter the name of your exchange server which might be something like myexchangeserver.subdomain.mycompany.com. In the “Exchange Proxy Settings” dialog, enter the name of your proxy server, which might be something like myserver.mycompany.com. Although this seems obvious to some, I've seen people mix this up because no one actually reads dialogs, and it might take a logical leap to say “Even though I don't have direct access to my exchange server right now, I need to have the exchange server name listed in the configuration.”[1] 

#2: If you're configuring RPC/HTTP without having RPC access to the Exchange server, do not check names. Cancel out of that dialog and then go into More Settings to configure the RPC Proxy first.

#3: If you don't see the “Exchange over the Internet“ section on the Connection tab after clicking on More Settings, then follow the steps in KB #833401 to set the EnableRPCTunnelingUI reg key.

#4: Install the hotfix in KB #331320.

[1] Note that depending on how your firewall/proxy is configured, these two fields could be the same.