Missing packages! for The Perfect Server - Debian Lenny (Debian 5) [ISPConfig 2]
I'm currently working my way through the 'The Perfect Server - Debian Lenny (Debian 5) [ISPConfig 2]' tutorial.
But I've noticed that it is not possible to apt-get certain packages that are needed to do the tutorial.
Page 4 of the tutorial. One has to down load packages from Debian's repository
apt-get install postfix libsasl2-2 sasl2-bin libsasl2-modules procmail
However 'libsasl2-2 sasl2-bin libsasl2-modules' are not available!!!
How do I proceed from here?