merge from HEAD

Author: Richard Jones

CHANGES.txt

@@ -20,6 +20,9 @@ Fixed:
 - handle dropped properies in rdbms/metakit journal export (sf bug 1203569)
 - handle missing Subject lines better (sf bug 1198729)
 - sort/group by missing values correctly (sf bug 1198623)
+- discard, don't bounce messages to the mailgw when the messages's sender
+  is invalid (ie. when we try to bounce, we get a 550 "unknown user
+  account" response from the SMTP server) (sf bug 1190906)
 
 
 2005-05-02 0.8.3