Merge pull request #4556 from twesterhever/temp-improve-freemail-aff

[Minor] Improve catch rates of FREEMAIL_AFF

conf/composites.conf

@@ -157,7 +157,7 @@ composites {
     group = "scams";
   }
   FREEMAIL_AFF {
-    expression = "(FREEMAIL_FROM | FREEMAIL_ENVFROM | FREEMAIL_REPLYTO) & R_UNDISC_RCPT & (INTRODUCTION | FROM_NAME_HAS_TITLE | FREEMAIL_REPLYTO_NEQ_FROM_DOM)";
+    expression = "(FREEMAIL_FROM | FREEMAIL_ENVFROM | FREEMAIL_REPLYTO) & (TO_DN_RECIPIENTS | R_UNDISC_RCPT) & (INTRODUCTION | FROM_NAME_HAS_TITLE | FREEMAIL_REPLYTO_NEQ_FROM_DOM)";
     score = 4.0;
     policy = "leave";
     description = "Message exhibits strong characteristics of advance fee fraud (AFF a/k/a '419' spam) involving freemail addresses";