Hi,

I have a pretty basic app that uses Clearance (http://github.com/
thoughtbot/clearance) for user auth and I've added the Sendgrid Basic
addon to handle mailing from Heroku. When I sign up, it tries sending
a confirmation mail but fails with this "Connection refused" message
in the logs:

Processing Clearance::UsersController#create (for 12.34.56.78 at
2010-01-14 04:11:58) [POST]
  Parameters: {"user"=>{"password_confirmation"=>"[FILTERED]",
"password"=>"[FILTERED]", "email"=>"[email protected]"}, "commit"=>"Sign
up", "action"=>"create",
"authenticity_token"=>"MiOGJAEngXaWjAEvC2ILJ3x4alnMf6Q9bjktuacI/tg=",
"controller"=>"clearance/users"}
Sent mail to [email protected]

Errno::ECONNREFUSED (Connection refused - connect(2)):
  /usr/local/lib/ruby/1.8/net/protocol.rb:206:in `initialize'
  /usr/local/lib/ruby/1.8/net/protocol.rb:206:in `new'
  /usr/local/lib/ruby/1.8/net/protocol.rb:206:in `old_open'
  /usr/local/lib/ruby/1.8/timeout.rb:62:in `timeout'
  /usr/local/lib/ruby/1.8/timeout.rb:93:in `timeout'
  /usr/local/lib/ruby/1.8/net/protocol.rb:206:in `old_open'
  /usr/local/lib/ruby/1.8/net/smtp.rb:392:in `do_start'
  /usr/local/lib/ruby/1.8/net/smtp.rb:377:in `start'
  clearance (0.8.4) [v] lib/clearance/user.rb:187:in
`send_confirmation_email'
  clearance (0.8.4) [v] app/controllers/clearance/users_controller.rb:
14:in `create'
  /home/heroku_rack/lib/static_assets.rb:9:in `call'
  /home/heroku_rack/lib/last_access.rb:25:in `call'
  /home/heroku_rack/lib/date_header.rb:14:in `call'
  thin (1.0.1) lib/thin/connection.rb:80:in `pre_process'
  thin (1.0.1) lib/thin/connection.rb:78:in `catch'
  thin (1.0.1) lib/thin/connection.rb:78:in `pre_process'
  thin (1.0.1) lib/thin/connection.rb:57:in `process'
  thin (1.0.1) lib/thin/connection.rb:42:in `receive_data'
  eventmachine (0.12.6) lib/eventmachine.rb:240:in `run_machine'
  eventmachine (0.12.6) lib/eventmachine.rb:240:in `run'
  thin (1.0.1) lib/thin/backends/base.rb:57:in `start'
  thin (1.0.1) lib/thin/server.rb:150:in `start'
  thin (1.0.1) lib/thin/controllers/controller.rb:80:in `start'
  thin (1.0.1) lib/thin/runner.rb:173:in `send'
  thin (1.0.1) lib/thin/runner.rb:173:in `run_command'
  thin (1.0.1) lib/thin/runner.rb:139:in `run!'
  thin (1.0.1) bin/thin:6
  /usr/local/bin/thin:20:in `load'
  /usr/local/bin/thin:20

Rendering /disk1/home/slugs/114284_b63c4f7_b2b3/mnt/public/500.html
(500 Internal Server Error)


I tried creating a mailer class for testing purposes as per the SMTP
docs (http://docs.heroku.com/smtp) and this didn't even get that far -
after pushing to Heroku and restarting for good measure, I ran 'heroku
console' and did the following:
>> UserMailer.test_mail
NoMethodError: undefined method `test_mail' for UserMailer:Class

This has got me tearing my hair out and I'd really appreciate any
advice!

Thanks
  Simon
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