```

    class Users::RegistrationsController < Devise::RegistrationsController
      def new
        super
      end
    
      def create
        super
      end
    
      def destroy
        super
      end
    end
    
```

どうして接続できないのかがわかりません。

### データベースが原因の場合

どこを見れば良いのかおしえてください。(sqlite3)

### devise が原因の場合

参考になるドキュメントまたは回答をいただければ幸いです。

### 情報が足りない場合

催促していただければ幸いです。

### 追加の情報

log そのまま

```

    Errno::ECONNREFUSED (Connection refused - connect(2) for "localhost" port 25):
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:540:in `initialize'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:540:in `open'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:540:in `tcp_socket'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:550:in `block in do_start'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/timeout.rb:82:in `block in timeout'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/timeout.rb:70:in `catch'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/timeout.rb:70:in `timeout'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:549:in `do_start'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:519:in `start'
      mail (2.6.3) lib/mail/network/delivery_methods/smtp.rb:112:in `deliver!'
      mail (2.6.3) lib/mail/message.rb:2141:in `do_delivery'
      mail (2.6.3) lib/mail/message.rb:236:in `block in deliver'
      actionmailer (4.1.6) lib/action_mailer/base.rb:527:in `block in deliver_mail'
      activesupport (4.1.6) lib/active_support/notifications.rb:159:in `block in instrument'
      activesupport (4.1.6) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
      activesupport (4.1.6) lib/active_support/notifications.rb:159:in `instrument'
      actionmailer (4.1.6) lib/action_mailer/base.rb:525:in `deliver_mail'
      mail (2.6.3) lib/mail/message.rb:236:in `deliver'
      devise (3.2.4) lib/devise/models/authenticatable.rb:173:in `send_devise_notification'
      devise (3.2.4) lib/devise/models/confirmable.rb:102:in `send_confirmation_instructions'
      devise (3.2.4) lib/devise/models/confirmable.rb:158:in `send_on_create_confirmation_instructions'
      activesupport (4.1.6) lib/active_support/callbacks.rb:424:in `block in make_lambda'
      activesupport (4.1.6) lib/active_support/callbacks.rb:221:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:221:in `block in halting_and_conditional'
      activesupport (4.1.6) lib/active_support/callbacks.rb:86:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:86:in `run_callbacks'
      activerecord (4.1.6) lib/active_record/callbacks.rb:306:in `_create_record'
      activerecord (4.1.6) lib/active_record/timestamp.rb:57:in `_create_record'
      activerecord (4.1.6) lib/active_record/persistence.rb:483:in `create_or_update'
      activerecord (4.1.6) lib/active_record/callbacks.rb:302:in `block in create_or_update'
      activesupport (4.1.6) lib/active_support/callbacks.rb:82:in `run_callbacks'
      activerecord (4.1.6) lib/active_record/callbacks.rb:302:in `create_or_update'
      activerecord (4.1.6) lib/active_record/persistence.rb:103:in `save'
      activerecord (4.1.6) lib/active_record/validations.rb:51:in `save'
      activerecord (4.1.6) lib/active_record/attribute_methods/dirty.rb:21:in `save'
      activerecord (4.1.6) lib/active_record/transactions.rb:268:in `block (2 levels) in save'
      activerecord (4.1.6) lib/active_record/transactions.rb:329:in `block in with_transaction_returning_status'
      activerecord (4.1.6) lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
      activerecord (4.1.6) lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
      activerecord (4.1.6) lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
      activerecord (4.1.6) lib/active_record/transactions.rb:208:in `transaction'
      activerecord (4.1.6) lib/active_record/transactions.rb:326:in `with_transaction_returning_status'
      activerecord (4.1.6) lib/active_record/transactions.rb:268:in `block in save'
      activerecord (4.1.6) lib/active_record/transactions.rb:283:in `rollback_active_record_state!'
      activerecord (4.1.6) lib/active_record/transactions.rb:267:in `save'
      devise (3.2.4) app/controllers/devise/registrations_controller.rb:15:in `create'
      actionpack (4.1.6) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
      actionpack (4.1.6) lib/abstract_controller/base.rb:189:in `process_action'
      actionpack (4.1.6) lib/action_controller/metal/rendering.rb:10:in `process_action'
      actionpack (4.1.6) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
      activesupport (4.1.6) lib/active_support/callbacks.rb:113:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:113:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:229:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:229:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:229:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:166:in `block in halting'
      activesupport (4.1.6) lib/active_support/callbacks.rb:149:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:149:in `block in halting_and_conditional'
      activesupport (4.1.6) lib/active_support/callbacks.rb:149:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:149:in `block in halting_and_conditional'
      activesupport (4.1.6) lib/active_support/callbacks.rb:86:in `call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:86:in `run_callbacks'
      actionpack (4.1.6) lib/abstract_controller/callbacks.rb:19:in `process_action'
      actionpack (4.1.6) lib/action_controller/metal/rescue.rb:29:in `process_action'
      actionpack (4.1.6) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
      activesupport (4.1.6) lib/active_support/notifications.rb:159:in `block in instrument'
      activesupport (4.1.6) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
      activesupport (4.1.6) lib/active_support/notifications.rb:159:in `instrument'
      actionpack (4.1.6) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
      actionpack (4.1.6) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
      activerecord (4.1.6) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
      actionpack (4.1.6) lib/abstract_controller/base.rb:136:in `process'
      actionview (4.1.6) lib/action_view/rendering.rb:30:in `process'
      actionpack (4.1.6) lib/action_controller/metal.rb:196:in `dispatch'
      actionpack (4.1.6) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
      actionpack (4.1.6) lib/action_controller/metal.rb:232:in `block in action'
      actionpack (4.1.6) lib/action_dispatch/routing/route_set.rb:82:in `call'
      actionpack (4.1.6) lib/action_dispatch/routing/route_set.rb:82:in `dispatch'
      actionpack (4.1.6) lib/action_dispatch/routing/route_set.rb:50:in `call'
      actionpack (4.1.6) lib/action_dispatch/routing/mapper.rb:45:in `call'
      actionpack (4.1.6) lib/action_dispatch/journey/router.rb:73:in `block in call'
      actionpack (4.1.6) lib/action_dispatch/journey/router.rb:59:in `each'
      actionpack (4.1.6) lib/action_dispatch/journey/router.rb:59:in `call'
      actionpack (4.1.6) lib/action_dispatch/routing/route_set.rb:678:in `call'
      omniauth (1.2.1) lib/omniauth/strategy.rb:186:in `call!'
      omniauth (1.2.1) lib/omniauth/strategy.rb:164:in `call'
      warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
      warden (1.2.3) lib/warden/manager.rb:34:in `catch'
      warden (1.2.3) lib/warden/manager.rb:34:in `call'
      rack (1.5.2) lib/rack/etag.rb:23:in `call'
      rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
      rack (1.5.2) lib/rack/head.rb:11:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/flash.rb:254:in `call'
      rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
      rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/cookies.rb:560:in `call'
      activerecord (4.1.6) lib/active_record/query_cache.rb:36:in `call'
      activerecord (4.1.6) lib/active_record/connection_adapters/abstract/connection_pool.rb:621:in `call'
      activerecord (4.1.6) lib/active_record/migration.rb:380:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
      activesupport (4.1.6) lib/active_support/callbacks.rb:82:in `run_callbacks'
      actionpack (4.1.6) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/reloader.rb:73:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
      railties (4.1.6) lib/rails/rack/logger.rb:38:in `call_app'
      railties (4.1.6) lib/rails/rack/logger.rb:20:in `block in call'
      activesupport (4.1.6) lib/active_support/tagged_logging.rb:68:in `block in tagged'
      activesupport (4.1.6) lib/active_support/tagged_logging.rb:26:in `tagged'
      activesupport (4.1.6) lib/active_support/tagged_logging.rb:68:in `tagged'
      railties (4.1.6) lib/rails/rack/logger.rb:20:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/request_id.rb:21:in `call'
      rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
      rack (1.5.2) lib/rack/runtime.rb:17:in `call'
      activesupport (4.1.6) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
      rack (1.5.2) lib/rack/lock.rb:17:in `call'
      actionpack (4.1.6) lib/action_dispatch/middleware/static.rb:64:in `call'
      rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
      railties (4.1.6) lib/rails/engine.rb:514:in `call'
      railties (4.1.6) lib/rails/application.rb:144:in `call'
      rack (1.5.2) lib/rack/lock.rb:17:in `call'
      rack (1.5.2) lib/rack/content_length.rb:14:in `call'
      rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
    
    
      Rendered /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.6/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.5ms)
      Rendered /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.6/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.3ms)
      Rendered /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.6/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.1ms)
      Rendered /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/gems/actionpack-4.1.6/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (21.4ms)
    
```
CC BY-SA 3.0
2015-03-24T08:59:47.233
8327
2015-05-23T21:24:10.840
2015-03-24T20:07:00.583
85
8991
question
ruby ruby-on-rails devise
Errno::ECONNREFUSED in Users::RegistrationsController#create
スタックトレースを見ると

```

      /Users/Sean/.rbenv/versions/2.1.0/lib/ruby/2.1.0/net/smtp.rb:540:in `initialize'
    
```

でエラーが起きているので、メールの送信に失敗しているようです。

この問題が起きているのは開発環境ですか？それとも本番環境（ネット上のwebサーバー）でしょうか？（実際に送信しようとしているのでおそらく後者のような気がします）

いずれにせよ、データベースの問題ではなくメール送信の設定に問題があるので、こちらのドキュメント等を参照して適切なメール設定を行ってください。

<http://railsguides.jp/action_mailer_basics.html#action-
mailer%E3%82%92%E8%A8%AD%E5%AE%9A%E3%81%99%E3%82%8B>
CC BY-SA 3.0
2015-03-24T20:18:23.030
8347
2015-03-24T20:18:23.030
85
8327
answer