Implementing a special domain for each user using Postfix was easy. Let's say your domain is example.com, then add this:
*.user MX 10 mail
to the DNS zone. Then add this:
user.example.com
before the last entry in masquerade_domains in main.cf (if you are using masquerade_domains). At last, add this:
/(^.*)@(.*)\.user.example.com$/ $2+user_$1
to a pcre virtual map (i.e., you need this in your main.cf too:
virtual_maps = pcre:/etc/postfix/virtual.pcre
).
Now there's an unlimited amount of email addresses for each user to use in the form <something>@<username>.user.example.com
They will be delivered using the 'local' agent, so using .forward files named '.forward+user_<something>' will work.
Very handy for all these webforms where an email address is needed and you don't know if you can trust the other party. Just put '/dev/null' in a .forward+user_<something> when you don't want any mail addressed to <something>@<username>.user.lysator.liu.se and the problem is solved.
You really had to use the i2c package from lm_sensors to get lm_sensors 2.6.2 to work.
Too sad my motherboard doesn't seem to support fan control.
http://listes.rezo.net/how.php was a good way of implementing Mailman with Postfix. Much better than my idea..
After entering the stuff from http://www.debian.org/News/weekly/2002/1/mail#1 into my apt configuration, Debian works even greater.
Another tip is that if you want a package from unstable even thought it exists in testing, you can do 'apt-get install <package>/unstable'. Very convenient.