Adding support for mail sending from smtp gateway

dicos/70_prometheus.xml

@@ -105,6 +105,7 @@
                     <variable name='grafana_auth_anonymous' type='string' description="Activer l'accès aux utilisateurs non enregistrés">
                         <value>false</value>
                     </variable>
+					<variable name='grafanaRootURL' type='string' description='Url publique de grafana (avec http:// ou https://)' mode='expert'/>
                 </family>
 
         <family name="alertes prometheus">

tmpl/grafana.ini

@@ -40,11 +40,13 @@ domain = %%grafana_domain
 
 # Redirect to correct domain if host header does not match domain
 # Prevents DNS rebinding attacks
-;enforce_domain = false
+enforce_domain = true
 
 # The full public facing url you use in browser, used for redirects and emails
 # If you use reverse proxy and sub path specify full url (with sub path)
-;root_url = http://localhost:3000
+%if %%is_empty('grafanaRootURL')
+root_url = %%grafanaRootURL
+%end if
 
 # Log web requests
 ;router_logging = false
@@ -299,18 +301,20 @@ enabled = %%grafana_auth_anonymous
 
 #################################### SMTP / Emailing ##########################
 [smtp]
-;enabled = false
-;host = localhost:25
+%if %%getVar('activer_exim_relay_smtp','non') == 'oui'
+enabled = true
+host = %%exim_relay_smtp:25
 ;user =
 # If the password contains # or ; you have to wrap it with trippel quotes. Ex """#password;"""
 ;password =
 ;cert_file =
 ;key_file =
-;skip_verify = false
-;from_address = admin@grafana.localhost
-;from_name = Grafana
+skip_verify = true
+from_address = %%system_mail_from
+from_name = Grafana
 # EHLO identity in SMTP dialog (defaults to instance_name)
 ;ehlo_identity = dashboard.example.com
+%end if
 
 [emails]
 ;welcome_email_on_sign_up = false