Sent email using gmail smtp in ruby

require 'pony'
Pony.mail(:to => 'real_mail@yahoo.com', :via => :smtp, :via_options => {
    :address => 'smtp.gmail.com',
    :port => '587',
    :enable_starttls_auto => true,
    :user_name => 'id_gmail',
    :password => 'parola_gmail',
    :authentication => :plain,
    :domain => "HELO",
},
:subject => 'Test email', :body => 'Test for Pony email through gmail SMTP server.')