This is what my sources list looks like:
Code:
# deb http://ftp.dk.debian.org/debian/ lenny main
deb http://ftp.dk.debian.org/debian/ etch main contrib non-free
deb-src http://ftp.dk.debian.org/debian/ etch etch main contrib non-free
deb http://ftp.dk.debian.org/debian/ lenny main contrib non-free
deb-src http://ftp.dk.debian.org/debian/ lenny main contrib non-free
deb http://security.debian.org/ lenny/updates main
deb-src http://security.debian.org/ lenny/updates main
deb http://volatile.debian.org/debian-volatile lenny/volatile main
deb-src http://volatile.debian.org/debian-volatile lenny/volatile main
I don't know if the non-free option makes the difference, but for security, I think you best stay with Lenny's
I had problems resuming the install after updating apt, since the install script would remember it had run once, and refused to run again giving me the same old error. I looked into this script, and noticed that towards the bottom, a perl script (/opt/zimbra/libexec/zmsetup.pl) was run to setup some preferences to the installation before it started the server. I ran it manually, and my problems were solved.
I have apparently a very selective memory, and I'm amazed about how little I remember of this already! Anyways, I hope I managed to come with a hint you can use to make it work for you. Good luck
/Jiménez