problem fix ...
add a setup_mail.rb (config/initializers)
ActionMailer::Base.smtp_settings = {
:address => "
smtp.gmail.com",
:port => 587,
:domain => "
yourdomain.com",
:user_name => "username",
:password => "password",
:authentication => "plain",
:enable_starttls_auto => true
}
ActionMailer::Base.default_url_options[:host] = "
yourdomain.com"