Need help to install a Cyrus Server on a FC2

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Hi, (don't laugh about my bad english) I wanna install an imap server on a Fedora Core 1 or 2. I follow several manuals and tutorials but nothing, I always had a mistake with the authentification or other things.... The server has to be an internal server, I get the messages from other server via fetchmail (POP3), and I distribute the messages to internal imap users. Right now, I use the default IMAP server that comes with Fedora 1, but some messages boxes weight more than 100mb, and is really painfull try to read this accounts periodically. Resume: I wanna know if someone can tell me about what packages I need to install, and if a I need RPMs or install from sources, and if you can send me the right configuration files, etc, etc.... Ok, I hope somebody can help me with this..... Pedro Gauna Montevideo - Uruguay