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INSTALL
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- Unpack the package (.tar.gz or .zip file) into a directory within your web server,
eg /home/httpd/webmail (*unix) or c:\inetpub\wwwroot\webmail (Win32). 

- Make a non web-shared folder (users cannot see this folder throught a web browser),
eg. /tmp/uebimiau or c:\winnt\temp\uebimiau

- The user wich the webserver is running (nobody, apache, IUSR_machine,etc) need rights
to write on this folder, turn it writtable

Open the "inc/config.php" file in a text editor, all instructions are commented on this file,
pay attention on the $temporary_folder variable, set it according your folder name