Динамический robots.txt (ngnix)

server {
    listen      %ip%:%web_ssl_port%;
    server_name %domain_idn% %alias_idn%;
    root        %sdocroot%;
    index       index.php index.html index.htm;
    access_log  /var/log/nginx/domains/%domain%.log combined;
    access_log  /var/log/nginx/domains/%domain%.bytes bytes;
    error_log   /var/log/nginx/domains/%domain%.error.log error;

    ssl         on;
    ssl_certificate      %ssl_pem%;
    ssl_certificate_key  %ssl_key%;

    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    location / {
        try_files $uri $uri/ @rewrite;
        location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
            expires     max;
        }
    }
    location @rewrite {
        rewrite ^/(.*)$ /index.php?q=$1;
    }

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass %backend_lsnr%;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $request_filename;
        include /etc/nginx/fastcgi_params;
    }

    error_page  403 /error/404.html;
    error_page  404 /error/404.html;
    error_page  500 502 503 504 /error/50x.html;

    location /error/ {
        alias   %home%/%user%/web/%domain%/document_errors/;
    }

    location ~* "/\.(htaccess|htpasswd)$" {
        deny    all;
        return  404;
    }

    location /vstats/ {
        alias   %home%/%user%/web/%domain%/stats/;
        include %home%/%user%/conf/web/%domain%.auth*;
    }

    include     /etc/nginx/conf.d/phpmyadmin.inc*;
    include     /etc/nginx/conf.d/phppgadmin.inc*;
    include     /etc/nginx/conf.d/webmail.inc*;

    include     %home%/%user%/conf/web/snginx.%domain%.conf*;
}