From 2300a83903e0f54078fac315c652582a832d1cd4 Mon Sep 17 00:00:00 2001
From: Michael Smith <michael@hurts.ca>
Date: Sat, 20 Oct 2007 06:37:02 -0400
Subject: [PATCH] avoid postmaster loops

---
 mailPlanner.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/mailPlanner.py b/mailPlanner.py
index 5ae1f5e..16fd581 100755
--- a/mailPlanner.py
+++ b/mailPlanner.py
@@ -9,6 +9,7 @@ import smtplib
 import sys
 import traceback
 import syslog
+import re
 
 import Planner
 import PlanTime
@@ -99,6 +100,21 @@ def handleMessage(msg, replyto):
     # Always return success. Otherwise Postfix will send a bounce message.
     return 0
 
+def looksLikePostmaster(msg, replyto):
+    r = replyto.lower()
+
+    # from the vacation(1) manpage plus some extras
+    for s in ('-request@', 'postmaster', 'uucp', 'mailer-daemon', 'mailer',
+            '-relay', 'abuse@', 'mailerdaemon', 'majordomo', 'maildaemon'):
+        if r.find(s) != -1:
+            return True
+
+    p = msg["precedence"]
+    if p and p.lower() in ('bulk', 'junk', 'list'):
+        return True
+
+    return False
+
 def main():
     fp = email.FeedParser.FeedParser()
     for line in sys.stdin:
@@ -107,6 +123,10 @@ def main():
 
     # if these headers are here, we can reply semi-intelligently with errors
     replyto = msg["reply-to"] or msg["from"]
+    if looksLikePostmaster(msg, replyto):
+        logIt("Skipping reply to postmaster address '%s'" % replyto)
+        return 0
+
     return handleMessage(msg, replyto)
 
 if __name__ == '__main__':
-- 
2.11.4.GIT