I have a config that handles different "websites" a main root handles the requests for the main url and I specify a specific path for it, in another location /mailtracker I handle a different app and point it to a different directory. My problem is php-fpm is not finding this second location.
Basically I want to have several locations pointing to different roots.
server {
        listen 80 default_server;
        listen [::]:80 default_server ipv6only=on;
    root /var/www/sites/dorero/;
    index index.php index.html index.htm;
    # Make site accessible from http://localhost/
    server_name localhost;
    location / {
            # First attempt to serve request as file, then
            # as directory, then fall back to displaying a 404.
            try_files $uri $uri/ =404;
            # Uncomment to enable naxsi on this location
            # include /etc/nginx/naxsi.rules
    }
location /mailtracker {
    alias /var/www/sites/mailtracker/web/;
    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass 192.168.10.3:9000;
                fastcgi_index index.php;
            include fastcgi_params;
        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
 }
    location ~ ^/(index|app|app_dev|config)\.php(/|$) {
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
    ## NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    #
    #       # With php5-cgi alone:
   fastcgi_pass 192.168.10.3:9000;
    #       # With php5-fpm:
    #   fastcgi_pass unix:/run/php/php7.0-fpm.sock;
            fastcgi_index index.php;
            include fastcgi_params;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    }
I tryied specifying instead of $document_root the path to the alias /var/www/sites/mailtracker/web/ and it didn't work.
Output from the php-fpm to this config says:
192.168.10.4 -  06/Feb/2018:19:04:49 +0000 "GET /mailtracker/index.php" 404
 
    