add script for testing app SMTP connections

config/environments/development.rb

@@ -27,7 +27,7 @@ Rails.application.configure do
   end
 
   # Don't care if the mailer can't send.
-  config.action_mailer.raise_delivery_errors = false
+  config.action_mailer.raise_delivery_errors = true
 
   config.action_mailer.perform_caching = false
 

config/environments/production.rb

@@ -55,7 +55,7 @@ Rails.application.configure do
 
   # Ignore bad email addresses and do not raise email delivery errors.
   # Set this to true and configure the email server for immediate delivery to raise delivery errors.
-  # config.action_mailer.raise_delivery_errors = false
+  config.action_mailer.raise_delivery_errors = true
 
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation cannot be found).