FEATURE: new 'auto_generated_whitelist' site setting

spec/components/email/receiver_spec.rb

@@ -142,6 +142,11 @@ describe Email::Receiver do
       expect(topic.posts.last.raw).to eq("This email was sent with an invalid from header field.")
     end
 
+    it "doesn't raise an AutoGeneratedEmailError when the mail is auto generated but is whitelisted" do
+      SiteSetting.auto_generated_whitelist = "foo@bar.com|discourse@bar.com"
+      expect { process(:auto_generated_whitelisted) }.not_to raise_error
+    end
+
     describe 'Unsubscribing via email' do
       let(:last_email) { ActionMailer::Base.deliveries.last }