Actually fix mail

config/environments/production.rb

@@ -85,7 +85,13 @@ Rails.application.configure do
   config.active_record.dump_schema_after_migration = false
 
   config.action_mailer.delivery_method = :smtp
-  config.action_mailer.mailgun_settings = {
+  config.action_mailer.smtp_settings = {
+    address: 'localhost',
+    port: 25,
+    openssl_verify_mode: OpenSSL::SSL::VERIFY_NONE,
     domain: 'mail.maartenberg.nl'
   }
+  config.action_mailer.default_options = {
+    from: 'Aardbei <aardbei@maartenberg.nl>'
+  }
 end