New to Linux/Courier/Postfix
I am new to linux and I am in the process of getting a mail server up and running using ubuntu 6.06, postfix, and courier. I have followed the guide at: http www [dot] howtoforge [dot] com/perfect_setup_ubuntu_6.06 to get my server up and running, a guide which has been linked to from this site, so I am hoping some of you are familiar with it.
My problem is, I am unfamiliar with Courier, and I'm not sure where to start with getting it going. I have gone over the installation guide for Courier at the courier-mta.org homepage, but as I downloaded courier and installed it as a package, rather than compiling it from source, I'm not even sure where to jump in with that installation guide! As well, some of the paths it refers to, such as /usr/lib/courier/sbin/courier start, seem not to exist on this setup.
I guess my question is, where does the "perfect ubuntu server" howto leave you in regards to Courier? How do I begin using it? I am using fetchmail to retrieve messages from my isp's server, and I believe it is working correctly, because when I log into my shell I am now getting the "new mail" message in the login messages. I have used the maildirmake command to create maildirs in the user directories. I am using ISPConfig and have selected the Use Maildirs option under management. However, when I try and log into the server from a mail client with user and password, my connection is denied. I am beginning to wonder if the courier servers are even running, or maybe the howto leaves them in a non-running state for later configuration - I just don't know.
As you may have guessed, I am a rank linux newbie. Is there anyone out there with any experience in getting a courier/postfix server up and running who can offer some advice? Or anyone with any experience wirth the above-referenced howto?