Kristofer Gafvert has posted two tutorials for Windows Server 2003 RC2 on his website:

Install and configure the email server in Windows 2003 + Outlook Express

Did you know that Windows Server 2003 has a built in POP3 Server? It's true! Configure an Email Server is however not easy, if you haven't read this tutorial of course. This version also explains the SMPT part better then the RC1 version.

Read more

Backup Windows Server 2003 (RC2)

Yes! You must backup your server. It is however not easy if you don't know how to do. But after you've read this tutorial you'll know everything about backups.

Read more