> The following sequence of events appears to have caused a loop which generated
> 3 megabytes worth of messages, filled up all subscriber mailboxes,
> and generally caused havoc.
>
(This message appears to have been caught by the administrivia checks,
since I sent it yesterday and the day before yesterday with the
h word in the Subject).
> It appears that the MAILER-DAEMON at the site listed in the error
> message improperly directed the message to the mailing list address.
>
> If you have any comments on how this situation could have been avoided, or
> why Majordomo did not recognize what was going on, and how I can prevent
> this in the future, please drop me a note at "leavitt@webcom.com".
>
> Sequence of events:
>
> Friday:
>
> I installed a patch to HP-UX Sendmail which included mime error
> handling.
>
> I set the OE option to
>
> OEr (reject, i.e. bounce back to sender)
>
> in the sendmail.cf file. (Did this have anything to do with the loop?)
>
> Sunday:
>
> The user uploaded a list of addresses and added this to his subscriber
> list.
>
> One of the addresses was "bad".
>
> The user set the "reply-to" address in the config file to "listname".
>
> The user sent a message to his list.
>
> The following error message was returned to the mailing list by
> "From: Mail Delivery Subsystem <MAILER-DAEMON@postofc.ble.cleveland.oh.us>"
> and the loop started.
>
> extract from archive follows:
>
> >From proforch-l@webcom.com Sun Jan 29 17:14:01 1995
> Received: by webcom.com
> (1.37.109.14/16.2) id AA010908440; Sun, 29 Jan 1995 17:14:01 -0800
> Return-Path: <proforch-l@webcom.com>
> Received: from postofc.ble.cleveland.oh.us by webcom.com with ESMTP
> (1.37.109.14/16.2) id AA010738429; Sun, 29 Jan 1995 17:13:50 -0800
> Received: from localhost (localhost) by postofc.ble.cleveland.oh.us (8.6.9/8.6.9) with internal id UAA08186; Sun, 29 Jan 1995 20:17:48 -0500
> Date: Sun, 29 Jan 1995 20:17:48 -0500
> From: Mail Delivery Subsystem <MAILER-DAEMON@postofc.ble.cleveland.oh.us>
> Subject: Returned mail: unknown mailer error 1
> Message-Id: <199501300117.UAA08186@postofc.ble.cleveland.oh.us>
> To: <proforch-l@webcom.com>
> Mime-Version: 1.0
> Content-Type: multipart/mixed; boundary="UAA08186.791428668/postofc.ble.cleveland.oh.us"
> Sender: proforch-l@webcom.com
> Precedence: bulk
> Reply-To: proforch-l@webcom.com
>
> This is a MIME-encapsulated message
>
> --UAA08186.791428668/postofc.ble.cleveland.oh.us
>
> The original message was received at Sun, 29 Jan 1995 20:17:45 -0500
> from mail-relay.oar.net [131.187.1.130]
>
> ----- The following addresses had delivery problems -----
> <tom.fetherston@express.ble.cleveland.oh.us> (unrecoverable error)
>
> ----- Transcript of session follows -----
> uux: express: System not found
> 554 <tom.fetherston@express.ble.cleveland.oh.us>... unknown mailer error 1
>
> ----- Message header follows -----
>
> --UAA08186.791428668/postofc.ble.cleveland.oh.us
> Content-Type: message/rfc822
>
> Return-Path: proforch-l@webcom.com
> Received: from dialup.oar.net (mail-relay.oar.net [131.187.1.130]) by postofc.ble.cleveland.oh.us (8.6.9/8.6.9) with ESMTP id UAA08185 for <tom.fetherston@express.ble.cleveland.oh.us>; Sun, 29 Jan 1995 20:17:45 -0500
> Received: from webcom.com for proforch-l@webcom.com
> by dialup.oar.net (PIPE/8.6.8.1/931123.1402) id NAA01287; Sun, 29 Jan 1995 13:54:12 -0500
> Received: by webcom.com
> (1.37.109.14/16.2) id AA168875107; Sun, 29 Jan 1995 10:45:07 -0800
> Received: from mail02.mail.aol.com by webcom.com with SMTP
> (1.37.109.14/16.2) id AA168474993; Sun, 29 Jan 1995 10:43:13 -0800
> Received: by mail02.mail.aol.com
> (1.38.193.5/16.2) id AA23469; Sun, 29 Jan 1995 13:50:43 -0500
> Date: Sun, 29 Jan 1995 13:50:43 -0500
> From: MCPLibrary@aol.com
> Message-Id: <950129135042_3756353@aol.com>
> To: proforch-l@webcom.com
> Subject: Re: Welcome to proforch-l
> Sender: proforch-l@webcom.com
> Precedence: bulk
> Reply-To: proforch-l@webcom.com
>
> ----- Message body suppressed -----
>
> --UAA08186.791428668/postofc.ble.cleveland.oh.us--
>
>
> >From proforch-l@webcom.com Sun Jan 29 17:13:53 1995
> Received: by webcom.com
> (1.37.109.14/16.2) id AA010808432; Sun, 29 Jan 1995 17:13:53 -0800
> Return-Path: <proforch-l@webcom.com>
> Received: from postofc.ble.cleveland.oh.us by webcom.com with ESMTP
> (1.37.109.14/16.2) id AA010688424; Sun, 29 Jan 1995 17:13:44 -0800
> Received: from localhost (localhost) by postofc.ble.cleveland.oh.us (8.6.9/8.6.9) with internal id UAA08182; Sun, 29 Jan 1995 20:17:44 -0500
> Date: Sun, 29 Jan 1995 20:17:44 -0500
> From: Mail Delivery Subsystem <MAILER-DAEMON@postofc.ble.cleveland.oh.us>
> Subject: Returned mail: unknown mailer error 1
> Message-Id: <199501300117.UAA08182@postofc.ble.cleveland.oh.us>
> To: <proforch-l@webcom.com>
> Mime-Version: 1.0
> Content-Type: multipart/mixed; boundary="UAA08182.791428664/postofc.ble.cleveland.oh.us"
> Sender: proforch-l@webcom.com
> Precedence: bulk
> Reply-To: proforch-l@webcom.com
>
> This is a MIME-encapsulated message
>
> --UAA08182.791428664/postofc.ble.cleveland.oh.us
>
> The original message was received at Sun, 29 Jan 1995 20:17:41 -0500
> from mail-relay.oar.net [131.187.1.130]
>
> ----- The following addresses had delivery problems -----
> <tom.fetherston@express.ble.cleveland.oh.us> (unrecoverable error)
>
> ----- Transcript of session follows -----
> uux: express: System not found
> 554 <tom.fetherston@express.ble.cleveland.oh.us>... unknown mailer error 1
>
> ----- Message header follows -----
>
> --UAA08182.791428664/postofc.ble.cleveland.oh.us
> Content-Type: message/rfc822
>
> Return-Path: proforch-l@webcom.com
> Received: from dialup.oar.net (mail-relay.oar.net [131.187.1.130]) by postofc.ble.cleveland.oh.us (8.6.9/8.6.9) with ESMTP id UAA08180 for <tom.fetherston@express.ble.cleveland.oh.us>; Sun, 29 Jan 1995 20:17:41 -0500
> Received: from webcom.com for proforch-l@webcom.com
> by dialup.oar.net (PIPE/8.6.8.1/931123.1402) id NAA26132; Sun, 29 Jan 1995 13:48:10 -0500
> Received: by webcom.com
> (1.37.109.14/16.2) id AA167404749; Sun, 29 Jan 1995 10:39:09 -0800
> Received: from mail02.mail.aol.com by webcom.com with SMTP
> (1.37.109.14/16.2) id AA166984636; Sun, 29 Jan 1995 10:37:16 -0800
> Received: by mail02.mail.aol.com
> (1.38.193.5/16.2) id AA21726; Sun, 29 Jan 1995 13:44:46 -0500
> Date: Sun, 29 Jan 1995 13:44:46 -0500
> From: Douglas463@aol.com
> Message-Id: <950129134445_3749234@aol.com>
> To: proforch-l@webcom.com
> Subject: Re: Welcome to proforch-l
> Sender: proforch-l@webcom.com
> Precedence: bulk
> Reply-To: proforch-l@webcom.com
>
> ----- Message body suppressed -----
>
> --UAA08182.791428664/postofc.ble.cleveland.oh.us--
>
>
> --
> Web Communications (sm) Thomas Leavitt--leavitt@webcom.com
> Voice: (408) 457-9671 x101 Lead Systems & Network Admin./Tech Suppt.
>
> <a href="http://www.webcom.com/";>Web Communications Home Page</a>
>
--
Web Communications (sm) Thomas Leavitt--leavitt@webcom.com
Voice: (408) 457-9671 x101 Lead Systems & Network Admin./Tech Suppt.
<a href="http://www.webcom.com/";>Web Communications Home Page</a>
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