On 20 Oct 2003, Alan Chandler wrote: > On Monday 20 October 2003 09:02, Anthony Campbell wrote: > > > I've realized recently that I'm inadvertently sending out lots of spam. > > I'd obviously wish to prevent this but how? I've been to the site you > > recommend but I find the information there too complex for me to be sure > > how to do it; it seems to be aimed at sysadmins of large sites and is > > well above the head of a single user like me. I downloaded a small perl > > script (Mail-SPF-Query-1.6) but I'm not clear how to use it. A simple > > guide for the uninitiated would be useful. > > Needs some more details, like why do you think you are sending out spam, what > is your mail server (MTA) thats doing it? > > If you have a badly configured MTA, it can act as a mail relay for others > (normally a mail server has mail coming in to deliver to local users - > possibly on a local lan, or mail going out from local users to the outside > world - what you want to prevent is mail coming and and being send out > again). Most have simple ways of doing that. > >
I'm using exim4 now, having just changed from exim3, but it happens with both of them. I hadn't changed any settings in ages so it can hardly be the configuration. I'm not on a network; just a single user with a dialup connection. I use spamprobe as a filter. The problem has appeared in the last few weeks, since when I've been seeing an increasing number of messages to say that outgoing mail has not been delivered (see below for some examples). None of these are messages I have sent myself (obviously). The failures are only a small subset of the emails that are being sent, presumably "successfully", because when I ran mailq this morning there were 20 or 30 spam messages waiting to go (I deleted them manually, of course). I looked at these before deleting them; they were a very mixed bunch indeed, so it can hardly be just one spammer. Some sample message failures: ------------------------------------- Date: 20 Oct 2003 09:20:15 -0000 From: [EMAIL PROTECTED] Subject: failure notice To: [EMAIL PROTECTED] Hi. This is the qmail-send program at bud.indirect.com. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[EMAIL PROTECTED]>: Sorry, no mailbox here by that name. (#5.1.1) --- Below this line is a copy of the message. Return-Path: <[EMAIL PROTECTED]> Received: (qmail 95450 invoked from network); 20 Oct 2003 09:20:15 -0000 Received: from unknown (HELO 58.221.33.65.cfl.rr.com) (65.33.221.58) by 0 with SMTP; 20 Oct 2003 09:20:15 -0000 Received: from [246.152.52.238] by 58.221.33.65.cfl.rr.com with ESMTP id DF1E37F7CF8; Mon, 20 Oct 2003 09:08:26 -0100 Message-ID: <[EMAIL PROTECTED]> From: "Lilia Downs" <[EMAIL PROTECTED]> Reply-To: "Lilia Downs" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Make your Penis Huge ccht acndym Date: Mon, 20 Oct 03 09:08:26 GMT X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="E_AB_52_AC5F." X-Priority: 3 X-MSMail-Priority: Normal [text snipped] ------------------------------------------ Date: Mon, 20 Oct 2003 12:04:45 +0200 (CEST) From: Mail Delivery Subsystem <[EMAIL PROTECTED]> Subject: Returned mail: User unknown To: [EMAIL PROTECTED] The original message was received at Mon, 20 Oct 2003 12:04:40 +0200 (CEST) from sif.komtel.net [212.7.128.165] ----- The following addresses had permanent delivery errors ----- <[EMAIL PROTECTED]> ------------------------------------------------ Date: Mon, 20 Oct 2003 03:52:07 -0700 From: Mail Delivery System <[EMAIL PROTECTED]> Subject: Mail delivery failed: returning message to sender To: [EMAIL PROTECTED] This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: [EMAIL PROTECTED] ------ This is a copy of the message, including all the headers. ------ Return-path: <[EMAIL PROTECTED]> Received: from [64.144.103.50] (helo=216.218.233.200) by callisto.ultraservers.net with smtp (Exim 4.24) id 1ABXdu-000132-OA for [EMAIL PROTECTED]; Mon, 20 Oct 2003 03:52:07 -0700 Received: from [95.231.67.32] by 216.218.233.200 with SMTP for <[EMAIL PROTECTED]>; Mon, 20 Oct 2003 04:46:06 -0700 Message-ID: <[EMAIL PROTECTED]> From: "Etta Good" <[EMAIL PROTECTED]> Reply-To: "Etta Good" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: hi james how are you doing Date: Mon, 20 Oct 03 04:46:06 GMT X-Mailer: The Bat! (v1.52f) Business MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="E__181FF5.D6A_ABE_1E.B" X-Priority: 1 X-MSMail-Priority: High --------------------------------------------------- Anthony -- [EMAIL PROTECTED] || http://www.acampbell.org.uk using Linux GNU/Debian || for book reviews, electronic Windows-free zone || books and skeptical articles -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]