title: Connection refused - connect(2) for "localhost" port 587
body: <p>I'm getting this error in development when trying to create a user. Who can enlighten me what have I done wrong?</p>
  
  <p><a href="https://i.stack.imgur.com/oh5Vw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oh5Vw.png" alt="enter image description here"></a></p>
  
  <p><strong>users_controller.rb</strong></p>
  
  <pre><code>  def create
      @user = User.new(user_params)
      if @user.save
        session[:user_id] = @user.id
        UserMailer.signup_confirmation(@user).deliver_now
        redirect_to user_tasks_path(current_user.id), notice: "Thank you for signing up!"
      else
        render "new"
      end
    end
  </code></pre>
  
  <p><strong>environments/development.rb</strong></p>
  
  <pre><code>Rails.application.configure do
    # Settings specified here will take precedence over those in config/application.rb.
  
    # In the development environment your application's code is reloaded on
    # every request. This slows down response time but is perfect for development
    # since you don't have to restart the web server when you make code changes.
    config.cache_classes = false
  
    # Do not eager load code on boot.
    config.eager_load = false
  
    # Show full error reports and disable caching.
    config.consider_all_requests_local       = true
    config.action_controller.perform_caching = false
  
    # Don't care if the mailer can't send.
    config.action_mailer.raise_delivery_errors = true
  
    config.action_mailer.delivery_method = :smtp
  
    config.action_mailer.smtp_settings = {
    adress: "smtp@gmail.com",
    port: 587,
    authentication: "plain",
    enable_starttls_auto: true,
    user_name: ENV["GMAIL_USERNAME"],
    password: ENV["GMAIL_PASSWORD"]
    }
  
    # Print deprecation notices to the Rails logger.
    config.active_support.deprecation = :log
  
    # Raise an error on page load if there are pending migrations.
    config.active_record.migration_error = :page_load
  
    # Debug mode disables concatenation and preprocessing of assets.
    # This option may cause significant delays in view rendering with a large
    # number of complex assets.
    config.assets.debug = true
  
    # Asset digests allow you to set far-future HTTP expiration dates on all assets,
    # yet still be able to expire them through the digest params.
    config.assets.digest = true
  
    # Adds additional error checking when serving assets at runtime.
    # Checks for improperly declared sprockets dependencies.
    # Raises helpful error messages.
    config.assets.raise_runtime_errors = true
  
    # Raises error for missing translations
    # config.action_view.raise_on_missing_translations = true
  end
  </code></pre>
  
  <p><strong>mailers/application_mailer.rb</strong></p>
  
  <pre><code>class ApplicationMailer &lt; ActionMailer::Base
    default from: "alexnotonfire@example.com"
    layout 'mailer'
  end
  </code></pre>
  
  <p><strong>mailers/user_mailer.rb</strong></p>
  
  <pre><code>class UserMailer &lt; ApplicationMailer
  
    # Subject can be set in your I18n file at config/locales/en.yml
    # with the following lookup:
    #
    #   en.user_mailer.signup_confirmation.subject
    #
    def signup_confirmation(user)
      @user = user
  
      mail to: user.email, subject: "Sign Up Confirmation"
    end
  end
  </code></pre>
  
  <p><strong>views/user_mailer/signup_confirmation.text.erb</strong></p>
  
  <pre><code>&lt;%= @user.first_name %&gt;,
  
  Thank you for signing up!
  </code></pre>