I've followed your advice ... but no improuvment.
But ... I think I've got a sollution, at least for all my problems.
I've changed fpm_event to fpm_worker and php53u.
Now I can logon in webmail, my sites with phph no more "Internel Server Error" and even owncloud page is working.
Maybe this is "the solution"?
the results of the previous show me that your system has been installed php-mysql and php-fpm but not for the type you choose, it is actually obvious solution is to install it according to your choice, I have experienced it and I have overcome , you said that it did not work but you do not show me the result, it's not that easy, then we need to know the results before the next step. it seems you just want the script to run on your system but for us not only how the script is running but also with the system that we want, if that is your intention, then good luck