DEV: Update mail and use fork (#10639)

Version 2.8 brings some changes to how address fields are handled and
this commits updates that and should also include a fix which handles
encoded attachment filenames.

The fork contains a bugfix to correctly decode mail attachments.

spec/components/email/receiver_spec.rb

@@ -646,6 +646,14 @@ describe Email::Receiver do
       MD
     end
 
+    it "can decode attachments" do
+      SiteSetting.authorized_extensions = "pdf"
+      Fabricate(:group, incoming_email: "one@foo.com")
+
+      process(:encoded_filename)
+      expect(Upload.last.original_filename).to eq("This is a test.pdf")
+    end
+
     context "when attachment is rejected" do
       it "sends out the warning email" do
         expect { process(:attached_txt_file) }.to change { EmailLog.count }.by(1)

spec/components/imap/imap_helper.rb

@@ -18,7 +18,7 @@ def EmailFabricator(options)
   email += "Cc: #{options[:cc]}\n" if options[:cc]
   email += "In-Reply-To: #{options[:in_reply_to]}\n" if options[:in_reply_to]
   email += "References: #{options[:in_reply_to]}\n" if options[:in_reply_to]
-  email += "Message-ID: #{options[:message_id]}\n" if options[:message_id]
+  email += "Message-ID: <#{options[:message_id]}>\n" if options[:message_id]
   email += "Subject: #{options[:subject] || "This is a test email subhect"}\n"
   email += "Mime-Version: 1.0\n"
   email += "Content-Type: #{options[:content_type] || "text/plain;\n charset=UTF-8"}\n"