From 434f9f79e26583ac93442dbb6c4a33a437acbab3 Mon Sep 17 00:00:00 2001
From: twesterhever <40121680+twesterhever@users.noreply.github.com>
Date: Sun, 24 Mar 2024 17:24:24 +0000
Subject: [PATCH] [Enhancement] Add more symbols for Reply-To header
 characteristics

---
 rules/headers_checks.lua | 50 +++++++++++++++++++++++++++++-----------
 1 file changed, 36 insertions(+), 14 deletions(-)

diff --git a/rules/headers_checks.lua b/rules/headers_checks.lua
index 92ebb0ca3..9a716288b 100644
--- a/rules/headers_checks.lua
+++ b/rules/headers_checks.lua
@@ -233,20 +233,7 @@ local check_replyto_id = rspamd_config:register_symbol({
           if (util.strequal_caseless(from[1].domain, rt[1].domain)) then
             task:insert_result('REPLYTO_DOM_EQ_FROM_DOM', 1.0)
           else
-            -- See if Reply-To matches the To address
-            local to = task:get_recipients(2)
-            if (to and to[1] and to[1].addr:lower() == rt[1].addr:lower()) then
-              -- Ignore this for mailing-lists and automatic submissions
-              if (not (task:get_header('List-Unsubscribe') or
-                  task:get_header('X-To-Get-Off-This-List') or
-                  task:get_header('X-List') or
-                  task:get_header('Auto-Submitted')))
-              then
-                task:insert_result('REPLYTO_EQ_TO_ADDR', 1.0)
-              end
-            else
-              task:insert_result('REPLYTO_DOM_NEQ_FROM_DOM', 1.0)
-            end
+            task:insert_result('REPLYTO_DOM_NEQ_FROM_DOM', 1.0)
           end
         end
         -- See if the Display Names match
@@ -255,6 +242,25 @@ local check_replyto_id = rspamd_config:register_symbol({
           task:insert_result('REPLYTO_DN_EQ_FROM_DN', 1.0)
         end
       end
+
+      -- See if Reply-To matches the To address
+      local to = task:get_recipients(2)
+      if (to and to[1] and to[1].addr:lower() == rt[1].addr:lower()) then
+        -- Ignore this for mailing-lists and automatic submissions
+        if (not (task:get_header('List-Unsubscribe') or
+          task:get_header('X-To-Get-Off-This-List') or
+          task:get_header('X-List') or
+          task:get_header('Auto-Submitted')))
+        then
+          task:insert_result('REPLYTO_EQ_TO_ADDR', 1.0)
+        end
+      elseif to[1].domain and rt[1].domain then
+        if (util.strequal_caseless(to[1].domain, rt[1].domain)) then
+          task:insert_result('REPLYTO_DOM_EQ_TO_DOM', 1.0)
+        else
+          task:insert_result('REPLYTO_DOM_NEQ_TO_DOM', 1.0)
+        end
+      end
     end
   end
 })
@@ -331,6 +337,22 @@ rspamd_config:register_symbol {
   description = 'Reply-To is the same as the To address',
   group = 'headers',
 }
+rspamd_config:register_symbol {
+  name = 'REPLYTO_DOM_EQ_TO_DOM',
+  score = 0.0,
+  parent = check_replyto_id,
+  type = 'virtual',
+  description = 'Reply-To domain matches the To domain',
+  group = 'headers',
+}
+rspamd_config:register_symbol {
+  name = 'REPLYTO_DOM_NEQ_TO_DOM',
+  score = 0.0,
+  parent = check_replyto_id,
+  type = 'virtual',
+  description = 'Reply-To domain does not match the To domain',
+  group = 'headers',
+}
 
 rspamd_config:register_dependency('CHECK_REPLYTO', 'CHECK_FROM')
 
-- 
2.39.5