[Declude.JunkMail] What is "L# Message OK"???

[David Bryden]

I see these (see below) statements for every message and can’t figure out what they are for.  At first I thought they were how deep they IP tests were digging into the header but then I looked at this message header and found that there was only 1 server in the header before the message was delivered to us.  Does anybody know what these mean?   10/23/2004 21:56:09 Q35d900de00f80871 L1 Message OK 10/23/2004 21:56:09 Q35d900de00f80871 L2 Message OK 10/23/2004 21:56:09 Q35d900de00f80871 L3 Message OK   David Bryden