Dear, I followed the tutorial 'the perfect server' for ubuntu 7.10, and installed ISPconfig. Now it runs all fine, but I have no idea how to make the setup a working mail server. I have registerd a domain (http://www.exilebear.nl). The idea is the run my own mail server at my home, the port 25 is not blocked by my ISP so that's not a problem. I am new in the linux world, could somebody describe what I must do next?