Hi all, If you're reading this, you may have ran into the same issue I did.
cgi.fix_pathinfo = 0
This was the default config for this server. I changed this to:
cgi.fix_pathinfo = 1
And this got roundcube working. Yay! And it is safer too. But now FUDForum was broken (see symptoms above). Digging further, I pieced together that the solution was to add the below to your *.php block in nginx:
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
Once this is done you should now be getting 500 internal error pres from your server. The issue is it can't find the GLOBALS.php file due to the include path (well atleast for me anyway) So then set your include_path in your php pool config for the php pool your FUDForum website is using:
php_value[include_path] = "/usr/share/php:/usr/share/pear:/var/local/FUDforum/scripts:/var/local/FUDforum/include:/var/local/FUDforum/include/theme/default"
Change the path to match the data folder of your installation (/var/local/FUDforum) You should be right to go. Ref: http://serverfault.com/questions/514157/how-to-set-php-include-path-for-php-fpm-in-nginx-config http://fudforum.org/forum/index.php?t=msg&th=119217&goto=162124msg_162124
So it seems the cgi.fix_pathinfo setting needs to be set to 1 in your php.ini file in order for this line to not break everything in your nginx config:
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
So to wrap up, set:
cgi.fix_pathinfo 1;In your php.ini.