I have also found that extracting the zip files of the zimbra_posixaccount.zip and zimbra_samba.zip in linux (Ubuntu 7.10) will create folders with the files you need to edit under them.
However if you right click on the folder and go create archive - it does. However it creates a zip file with a sub folder called zimbra_posixaccount then the files under that - if you try to deploy this zip then it fails.
The zip file needs to contain the files immediately in the root of the zip file.
Hope that helps someone |