Hi, I wouldn't mention this, but as nobody else commented on it, I thought that perhaps it could be only me, and the rest of you have a configuration that rejects them. Is one of those bounces from a lister with a misconfigured postfix from days (weeks?) ago. Anyway. I copy here the important parts of the bounce; I would like to reject it in postfix. But how? Return-Path: <> --> this is the envelope from, impossible to reject. ... Received: from mail.aculink.net (65.173.158.7) by netmail.tiscalinet.es (6.7.021.1) id 426E55CC001473B4 for *; Wed, 11 May 2005 22:18:38 +0200 Received: from linux.local ([204.118.157.51]) by mail.aculink.net (Merak 6.2.1) with ESMTP id EDA37003 for ; Wed, 11 May 2005 14:18:31 -0600 ... Date: Wed, 11 May 2005 10:41:59 -0600 (MDT) From: MAILER-DAEMON@linux.local (Mail Delivery System) Subject: Undelivered Mail Returned to Sender To: robin1.listas@ ... This is the reason, the misconfiguration. People should really test their setup locally before going on internet... : host localhost[127.0.0.1] said: 451 4.5.0 Error in processing, id=03813-07, virus_scan FAILED: NO VIRUS SCANNERS AVAILABLE (in reply to end of DATA command) ... Received: from localhost (localhost [127.0.0.1]) by linux.local (Postfix) with ESMTP id 57C8C331A6 for ; Sat, 30 Apr 2005 20:00:07 -0600 (MDT) Received: from mail.unionavenue.com [65.173.158.7] by localhost with POP3 (fetchmail-6.2.3) for gbrown@localhost (single-drop); Sat, 30 Apr 2005 20:00:07 -0600 (MDT) Received: from lists.suse.com ([195.135.221.131]) by mail.aculink.net (Merak 6.2.1) with SMTP id EDA37003 for <gbrown at unionavenue.com>; Tue, 26 Apr 2005 18:25:23 -0600 ^^^^^^^ This one is the culprit. Does anybody know him? Can somebody tell him to reconfigure his postfix correctly? -- Cheers, Carlos Robinson