Redmine

Hi Jean-Philippe,

Maybe being able to configure what to do with "auto generated" emails?

It would be very easy for me to just make it return "true", but maybe giving people the choice of skipping such emails silently would work? If I'm correct, in terms of MTA, that would be similar to a drop as opposed to a bounce.

François

I am experiencing the same problem.

Currently, MailHandler#receive ignores auto-generated emails. Ignoring such emails is not a problem. But it returns false when it ignored auto-generated emails, and MailHandlerController#index responds "422 Unprocessable Entity" to rdm-mailhandler.rb which was invoked by an MTA such as Postfix and Sendmail. Then, rdm-mailhandler.rb returns EX_TEMPFAIL to the MTA if it gets "422 Unprocessable Entity" response.

As a result, the MTA continues to retry delivery for a few days and it will send an error notification to the original sender at last.

To avoid that, I think MailHandlerController#index should return "200 OK" instead of "422 Unprocessable Entity" when Redmine ignored an auto-generated email.

app/controllers/mail_handler_controller.rb:
MailHandlerController#index returns "422 Unprocessable Entity" when Redmine ignored an auto-generated email.

  # Submits an incoming email to MailHandler
  def index
    options = params.dup
    email = options.delete(:email)
    if MailHandler.receive(email, options)
      head :created
    else
      head :unprocessable_entity
    end
  end

extra/mail_handler/rdm-mailhandler.rb:
rdm-mailhandler.rb returns EX_TEMPFAIL to the MTA if MailHandlerController#index returned "422 Unprocessable Entity".

    begin
      response = Net::HTTPS.post_form(URI.parse(uri), data, headers, :no_check_certificate => no_check_certificate, :certificate_bundle => certificate_bundle)
    rescue SystemCallError, IOError => e # connection refused, etc.
      warn "An error occurred while contacting your Redmine server: #{e.message}" 
      return 75 # temporary failure
    end