If you are attempting to get files with a .html extension parsed as PHP with Nginx + php-fpm, you might get an "access denied" error in your browser, and the error message "Access to the script ‘…’ has been denied (see security.limit_extensions)" in your Nginx error log. This post shows how to allow html files to be parsed successfully as PHP with Nginx + php-fpm.
I’ve recently set up a new server with PHP & Nginx using packages from dotdeb. The default upload_max_filesize and post_max_size for this setup with php-fpm is 2M. To adjust it, the Nginx config also needs a configuration change, otherwise you’re still stuck with a 2MB limit.