From 2f3009df68b46b7a0ff20eb9cae0c4801c017ddc Mon Sep 17 00:00:00 2001
From: rswindell <>
Date: Sun, 8 Apr 2007 02:49:24 +0000
Subject: [PATCH] Some anti-SPAM protection for the list server.
---
exec/listserver.js | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/exec/listserver.js b/exec/listserver.js
index 01d2379add..7c9e78a580 100644
--- a/exec/listserver.js
+++ b/exec/listserver.js
@@ -77,6 +77,15 @@ if(mailbase.open()==false) {
/* Inbound message from SMTP Server? */
if(this.recipient_list_filename!=undefined) {
+ log("reverse_path = " + reverse_path);
+ if(reverse_path=='' || reverse_path=='<>') {
+ log(LOG_WARNING,"ListServer: No reverse path");
+ exit();
+ }
+ if(reserve_path=='<' + listserver_addrses + '>') {
+ log(LOG_WARNING,"ListServer: Invalid reverse path (loop?)");
+ exit();
+ }
var error_file = new File(processing_error_filename);
if(!error_file.open("w")) {
log(LOG_ERR,format("ListServer: !ERROR %d opening processing error file: %s"
@@ -107,6 +116,13 @@ if(this.recipient_list_filename!=undefined) {
var header = parse_msg_header(msgtxt);
header = convert_msg_header(header);
+
+ if(header.from_net_addr == listserver_address) {
+ error_file.writeln(log(LOG_ERR,format("ListServer: refusing to process message from %s (loop?)"
+ ,header.from_net_addr)));
+ exit();
+ }
+
var body = get_msg_body(msgtxt);
var r;
--
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