Rails ActiveJob - What's the good way to handle exception in ActionMailer::DeliveryJob

Question

I am using ActiveJob + Sidekiq in my Rails project for task processing.

I send my mails directly using MyMailer.some.deliver_later. It will automatically creates a ActionMailer::DeliveryJob task and put it in the Sidekiq queue.

The question is, what's the good to handle exceptions from there?

Best Regards.

Answer 1

According to http://edgeguides.rubyonrails.org/active_job_basics.html, I think the good way is to setup exception error handlers for ActionMailer::DeliveryJob in an initializer, somethinglike:

ActionMailer::DeliveryJob.rescue_from(Net::SMTPSyntaxError) do |exception|
  unless ['501 Command parsing failed'].include?(exception.message.strip)
    raise exception
  end
end