Just would like to say well done, and nice job on Zimbra installation, i have a full install on debian etch within about 2 hours which was fun.
I tried install scalix still with no luck working on it for a couple of days now.
I really like how you pack most of the apps and the install.sh.
There was just two small mod's needed for it to install on etch. using editor, edit debian_version to 3.1 and edit utilfunc.sh to look for libgmp3c2 not libgmp3.
Back to scalix what a headace.
Just on another note, good idea that zimbra supports debian there is not real overhead like other linux distros, debian is small and fast.