GitHub User: kmint
In case anyone else is having problems getting this to work with gmail apps, there is a little error in Ryan's demo code. In mail_setup.rb, user_name must be fully qualified, as in firstname.lastname@example.org, not just user. In the example, Ryan has
:user_name => "railscasts"
...where it should be...
:user_name => "email@example.com".
Even I have the same doubt