Update README.md

README.md

@@ -498,6 +498,8 @@ To configure it follow platoniq's guide, or just explore the app.
 
 # Known problems
 
+#### emails not getting sent
+
 If you try to setup an (network) external email server (like mailbox) and the server is **not** configured to respond starttls request you may get a timeout on the decidim log's (`/log/production.log`, use `tail -f` to be sure). If this happens, [according to this issue](https://github.com/Platoniq/decidim-install/issues/5) you are suppouse to add
 
 ```ruby
@@ -525,3 +527,13 @@ In the `/config/environments/production.rb` file. like so:
 ```
 
 This solved a **VERY HARD** to debbug problem. Thanks Marcus Reisdoefer. Also, TLS problems are relatively common when dealing with mail services, so beware of those.
+
+#### nginx not recognizing passenger
+
+Refer to this [guide for installing nginx with passenger module](https://www.phusionpassenger.com/library/install/nginx/install_as_nginx_module.html). Basicaly you gotta run: 
+
+```bash
+passenger-install-nginx-module
+```
+
+It's an automated script that's very helpful.