rails/rails — pull request #15615 by JuanitoFatas (2014-06-10 17:52:31+00:00)
Title: [ci skip] Improve enable_starttls_auto documentation (Action Mailer).

Now `enable_starttls_auto` defaults to `true`, ref: https://github.com/rails/rails/blob/master/actionmailer/lib/action_mailer/delivery_methods.rb#L29