proxy_intercept_errors on;

error_page 404 @404portal;

location @404portal {
	 proxy_set_header X-Real-IP $remote_addr;
	 proxy_set_header Host $host;
	 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	 proxy_set_header X-Yandex-NotFound-Project "autodetect";
	 proxy_pass http://any.yandex.ru;
	 proxy_set_header X-Yandex-NotFound-404as200 "On";
}

