Sernet

create an account

https://portal.enterprisesamba.com/

add this to /etc/apt/source.list

change USERNAME and ACCESSKEY

deb http://USERNAME:ACCESSKEY@download.sernet.de/packages/samba/4.1/debian squeeze main
deb-src http://USERNAME:ACCESSKEY@download.sernet.de/packages/samba/4.1/debian squeeze main

The SerNet build key

wget http://ftp.sernet.de/pub/sernet-samba-keyring_1.4_all.deb
dpkg -i sernet-samba-keyring_1.4_all.deb

update

apt-get update

install

apt-get install sernet-samba-ad

provision

samba-tool domain provision