Document variables for sending emails

Author: AramAlsabti

source/installation-guide/installation-guide.rst

@@ -221,6 +221,16 @@ OS2IoT-backend takes several environment variables as configuration, if these ar
 +-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
 | FRONTEND_BASEURL              | URL for the frontend, used when building email links (THIS SHOULD BE CHANGED!)                       | :code:`http://localhost:8081`                                                           |
 +-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| EMAIL_HOST                    | URL for the SMTP server, used when sending emails (THIS SHOULD BE CHANGED!)                          | :code:`"smtp.ethereal.email"`                                                           |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| EMAIL_PORT                    | Port for the email server, used when sending emails (THIS SHOULD BE CHANGED!)                        | :code:`587`                                                                             |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| EMAIL_USER                    | Username for email server authentification, used when sending emails (THIS SHOULD BE CHANGED!)       | :code:`"[email protected]"`                                                 |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| EMAIL_PASS                    | Password for email server authentification, used when sending emails (THIS SHOULD BE CHANGED!)       | :code:`"KzRSyYReEygpFPPZdd"`                                                            |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| EMAIL_FROM                    | Email sender address. Either a plain address or a display name and the address (CHANGE IT!)          | :code:`"OS2iot [email protected]"`                                          |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
 | KOMBIT_ENTRYPOINT             | The context broker URL for KOMBIT adgangsstyring                                                     | :code:`https://adgangsstyring.eksterntest-stoettesystemerne.dk/runtime/saml2/issue.idp` |
 +-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
 | KOMBIT_CERTIFICATEPRIVATEKEY  | The certificate  private key for KOMBIT adgangsstyring                                               | :code:`null`                                                                            |