recibir errores por mail

Gemfile

@@ -37,6 +37,7 @@ gem 'bootstrap', '~> 4.0.0.beta3'
 gem 'jekyll'
 gem 'jquery-rails'
 gem 'font-awesome-rails'
+gem 'exception_notification'
 
 group :development, :test do
   gem 'pry'

Gemfile.lock

@@ -94,6 +94,9 @@ GEM
     erubi (1.7.0)
     erubis (2.7.0)
     eventmachine (1.2.5)
+    exception_notification (4.2.2)
+      actionmailer (>= 4.0, < 6)
+      activesupport (>= 4.0, < 6)
     execjs (2.7.0)
     ffi (1.9.18)
     font-awesome-rails (4.7.0.2)
@@ -284,6 +287,7 @@ DEPENDENCIES
   capybara (~> 2.13)
   dotenv-rails
   email_address
+  exception_notification
   font-awesome-rails
   haml-rails
   jbuilder (~> 2.5)

config/environments/production.rb

@@ -84,4 +84,18 @@ Rails.application.configure do
 
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
+
+  # Recibir por mail notificaciones de excepciones
+  config.action_mailer.default_url_options = { host: 'sutty.kefir.red' }
+  config.action_mailer.perform_deliveries = true
+  config.action_mailer.raise_delivery_errors = true
+  config.action_mailer.delivery_method = :sendmail
+  config.action_mailer.default_options = { from: 'sutty@kefir.red' }
+
+  config.middleware.use ExceptionNotification::Rack,
+    email: {
+      email_prefix: '[ERROR]',
+      sender_address: %(sutty@kefir.red),
+      exception_recipients: 'sysadmin@kefir.red'
+    }
 end