still in learning progress, i tried to install roundcube webmail.
The next couple of extensions are optional and recommended to get the best performance:
FileInfo: NOT AVAILABLE(See http://www.php.net/manual/en/ref.fileinfo.php)
I know it's optional and not neccessary, but i think there has to be kind of a standard, to activate php extensions in ispc3 i guess.
I gave a first shot by adding
to the sites options, but no success. (jobqueue empty, apache reloaded manually)
Thanks for help, giftsnake.