As the originator of this thread, it should NOT be marked as Resolved. Please change it to Known or Being Fixed.
Looking at messages from yesterday and saw over 4,200 messages with null sender. Of those, only 64 were legitimate, the rest (98.5%) were spam!!!
Need to fix this so basic spam checks like Reverse DNS get run for null senders. The new scoring feature is not acceptable because it marks legitimate messages (e.g. Auto Replies, Delivery Failure, etc.) as spam.