allow for mail system without authentication (#1019)

* allow for mail system without authentication

* try to fix travis build

config/environments/production.rb

@@ -82,7 +82,8 @@ Rails.application.configure do
   # Tell Action Mailer to use smtp server, if configured
   config.action_mailer.delivery_method = ENV['SMTP_SERVER'].present? ? :smtp : :sendmail
 
-  ActionMailer::Base.smtp_settings = {
+  ActionMailer::Base.smtp_settings = if ENV['SMTP_AUTH'].present? && ENV['SMTP_AUTH'] != "none"
+    {
       address: ENV['SMTP_SERVER'],
       port: ENV["SMTP_PORT"],
       domain: ENV['SMTP_DOMAIN'],
@@ -91,6 +92,14 @@ Rails.application.configure do
       authentication: ENV['SMTP_AUTH'],
       enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
     }
+  else
+    {
+      address: ENV['SMTP_SERVER'],
+      port: ENV["SMTP_PORT"],
+      domain: ENV['SMTP_DOMAIN'],
+      enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
+    }
+  end
 
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = true