If it fails to activate self, call MailHost.send directly.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@21033 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmailDocument.py

@@ -507,7 +507,11 @@ class EmailDocument(File, TextDocument):
                                        attachment_list=attachment_list,
                                        additional_headers=additional_headers)
       mail_message = mime_message.as_string()
-      self.activate(activity='SQLQueue').sendMailHostMessage(mail_message)
+      try:
+        self.activate(activity='SQLQueue').sendMailHostMessage(mail_message)
+      except TypeError:
+        # temporary document does not support activation.
+        self.MailHost.send(mail_message)
 
     # Save one of mail messages.
     self.setData(mail_message)