From bfe9ededbc03c4618947bebf0ece372409e0fdf3 Mon Sep 17 00:00:00 2001
From: Pierre Jaury <pierre@jaury.eu>
Date: Fri, 19 Aug 2016 21:58:40 +0200
Subject: [PATCH] Fix spam filtering when the score is negative

---
 dovecot/sieve/before.sieve | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/dovecot/sieve/before.sieve b/dovecot/sieve/before.sieve
index 00463d70..174f5597 100644
--- a/dovecot/sieve/before.sieve
+++ b/dovecot/sieve/before.sieve
@@ -9,13 +9,14 @@ require "relational";
 require "comparator-i;ascii-numeric";
 require "vnd.dovecot.extdata";
 
-if string :is "${extdata.spam_enabled}" "1" {
-  if header :matches "X-Spam-Status" "* score=*" {
-    if string :value "ge" :comparator "i;ascii-numeric" "${2}" "${extdata.spam_threshold}" {
-      setflag "\\seen";
-      fileinto :create "Junk";
-      stop;
-    }
+if allof (string :is "${extdata.spam_enabled}" "1",
+          not header :matches "X-Spam-Status" "* score=-*",
+          header :matches "X-Spam-Status" "* score=*")
+{
+  if string :value "ge" :comparator "i;ascii-numeric" "${2}" "${extdata.spam_threshold}" {
+    setflag "\\seen";
+    fileinto :create "Junk";
+    stop;
   }
 }