--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PIC.relaygood	Fri Oct 19 14:06:22 2007 +0200
@@ -0,0 +1,33 @@
+qmail-smtpd     Receive message by SMTP from another host:
+                   
+     |             MAIL FROM:<joe@heaven.af.mil>
+     |             RCPT TO:<bill@irs.gov>
+     |          
+     |          Is $RELAYCLIENT set? Yes: "".
+     |          Accept RCPT.  
+     V             
+                   
+qmail-queue     Store message safely on disk.
+                Trigger qmail-send.
+     |             
+     V             
+                   
+qmail-send      Look at envelope recipient, bill@irs.gov.
+     |          Is irs.gov in locals? No.
+     |          Is bill@irs.gov in virtualdomains? No.
+     |          Is irs.gov in virtualdomains? No.
+     |          Is .gov in virtualdomains? No.
+     |          Deliver remotely to bill@irs.gov.
+     V          
+                   
+qmail-rspawn    Run qmail-remote.
+
+     |             
+     V             
+
+qmail-remote    Look at host name, irs.gov.
+                Is irs.gov listed in smtproutes? No.
+		Look up DNS MX/A for irs.gov and connect to it by SMTP:
+                   
+                   MAIL FROM:<joe@heaven.af.mil>
+                   RCPT TO:<bill@irs.gov>