From 512285793eecd4b73c0e909f269c43a8d05a2880 Mon Sep 17 00:00:00 2001
From: titanism <101466223+titanism@users.noreply.github.com>
Date: Sat, 14 Dec 2024 15:41:19 -0600
Subject: [PATCH] fix: added bounce attack check

---
 helpers/get-bounce-info.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/helpers/get-bounce-info.js b/helpers/get-bounce-info.js
index 2ec07c07bc..c17194deb5 100644
--- a/helpers/get-bounce-info.js
+++ b/helpers/get-bounce-info.js
@@ -327,6 +327,15 @@ function getBounceInfo(err) {
   if (bounceInfo.category === 'spam' && err.truthSource === 'posteo.de')
     bounceInfo.category = 'blocklist';
 
+  // bounce attack
+  // >  550 Suspected bounce attacks
+  // <https://service.mail.qq.com/detail/122/57>
+  if (
+    response.includes('bounce attack') ||
+    response.includes('misdirected bounce')
+  )
+    bounceInfo.category = 'spam';
+
   return bounceInfo;
 }