.: Configuring Exim4 and Courier IMAP under Debian GNU/Linux
Today I finally installed a mail transfer agent/mail delivery agent on my server.
I quickly looked at the most popular applications for such a job (Exim, Postfix and qmail) and choosed Exim 4 (especially because it's the only one which is 'real' opensource).
Then I searched a Howto or tutorial on Google, but most results were not really useful. For example the Exim 4 Howto from debianhowto.de like many others disappointed me a bit since they don't give any advice on configuring Exim. But after some evolution and mutation of the search string I finally found a very good guide.