[Minor] check for spam flag from United Internet

This header is present for most outgoing messages from United Internet which
includes "web.de" and GMX (freemailers which are very popular in Germany) as
well as messages sent from 1and1 webhosting packages.

diff --git a/rules/regexp/upstream_spam_filters.lua b/rules/regexp/upstream_spam_filters.lua
index be792a318f52569a0950c0db7a7e35d4904d8d8a..f96d293d32ebcb0c27777160ff8311858164d309 100644 (file)
--- a/rules/regexp/upstream_spam_filters.lua
+++ b/rules/regexp/upstream_spam_filters.lua
@@ -46,3 +46,10 @@ reconf['SPAM_FLAG'] = {
     description = "Message was already marked as spam",
     group = 'upstream_spam_filters'
 }
+
+reconf['UNITEDINTERNET_SPAM'] = {
+    re = 'X-UI-Out-Filterresults=/^junk:/H',
+    score = 5,
+    description = "United Internet says this message is spam",
+    group = 'upstream_spam_filters'
+}