--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PIC.local2ext	Fri Oct 19 14:06:22 2007 +0200
@@ -0,0 +1,41 @@
+                Original message:
+                   
+                   To: fred-sos
+                   Hi.
+                   
+qmail-inject    Fill in the complete envelope and header:
+                   
+     |             (envelope) from joe@heaven.af.mil to fred-sos@heaven.af.mil
+     |             From: joe@heaven.af.mil
+     |             To: fred-sos@heaven.af.mil
+     |             
+     |             Hi.
+     V             
+                   
+qmail-queue     Store message safely on disk.
+                Trigger qmail-send.
+     |             
+     V             
+                   
+qmail-send      Look at envelope recipient, fred-sos@heaven.af.mil.
+     |          Is heaven.af.mil in locals? Yes.
+     |          Deliver locally to fred-sos@heaven.af.mil.
+     V          
+                   
+qmail-lspawn ./Mailbox
+                   
+     |          Look at mailbox name, fred-sos.
+     |          Is fred-sos listed in qmail-users? No.
+     |          Is there a fred-sos account? No.
+     |          Is there a fred account? Yes.
+     |          Is fred's uid nonzero? Yes.
+     |          Is ~fred visible to the qmailp user? Yes.
+     |          Is ~fred owned by fred? Yes.
+     |          Give control of the message to fred.
+     |          Run qmail-local.
+     V          
+                   
+qmail-local fred ~fred fred-sos - sos heaven.af.mil joe@heaven.af.mil ./Mailbox
+                   
+                Does ~fred/.qmail-sos exist? Yes: "./Extramail".
+                Write message to ./Extramail in mbox format.