action_mailer_optional_tls.rb

require 'open-uri'
require 'net/https'

module Net
  class HTTP
    alias_method :original_use_ssl=, :use_ssl=

      def use_ssl=(flag)
        # Ubuntu
        if File.exists?('/etc/ssl/certs')
          self.ca_path = '/etc/ssl/certs'

          # MacPorts on OS X
          # You'll need to run: sudo port install curl-ca-bundle
        elsif File.exists?('/opt/local/share/curl/curl-ca-bundle.crt')
          self.ca_file = '/opt/local/share/curl/curl-ca-bundle.crt'
        end

        self.verify_mode = OpenSSL::SSL::VERIFY_PEER
        self.original_use_ssl = flag
      end
  end
end