Bugs item #1567408, was opened at 2006-09-28 18:30 Message generated for change (Settings changed) made by msapiro You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=100103&aid=1567408&group_id=103 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update.
Category: bounce detection Group: 2.1 (stable) Status: Open Resolution: None Priority: 5 Submitted By: Bron Gondwana (brong) Assigned to: Mark Sapiro (msapiro) Summary: Admin address over quota causes bounce loop
Initial Comment: X-Mailman-Version: 2.1.9.cp1 Hi, I'm not the administrator of the Mailman instance, just the poor sysadmin of a mail service who was woken in the middle of the night by our MX servers being severely overloaded by a mail loop. One of our users hit their quota in Cyrus and hence their mail was bouncing. This user is the admin for a Mailman list, and the list has been configured to forward all bounces to the admin. The message was: --===============2109117388== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit As list administrator, your authorization is requested for the following mailing list posting: List: ***** From: ***** Subject: ***** Reason: Message body is too big: 7519566 bytes with a limit of 40 KB At your convenience, visit: http://... to approve or deny the request. And above that stacks of: --===============0756822160== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit The attached message was received as a bounce, but either the bounce format was not recognized, or no member addresses could be extracted from it. This mailing list has been configured to send all unrecognized bounce messages to the list administrator(s). For more information see: http://.../bounce I will point the owners of the offending bug at this thread so they can provide more specific information if they wish, without giving their privacy away. Bron. ---------------------------------------------------------------------- Comment By: Mark Sapiro (msapiro) Date: 2006-09-28 19:56 Message: Logged In: YES user_id=1123998 I am moving this to bugs as it is a bug report, not a patch. Your list owners don't need to provide any additional information. I understand exactly what's happening here. (but see below) There are two issues. The first is that we don't protect against this loop and I think we should try to. I'll look into fixing it, although I suspect it will not be easy as anything I might put in the 'unrecognized bounce' message to try to detect a loop can be munged or dropped by the MTA that returns the next bounce. The other part of the issue is that the MTA that is returning the 'over quota' denial is not returning an RFC 3464 or RFC 1894 compliant DSN or any of the many other formats that Mailman heuristically recognizes. If it were, it would be recognized and not sent back to the list owner. There is one thing you can provide and that is the actual 'delivery status' part of the unrecognized bounce. You can alter addresses and domains if you wish for privacy, but if I have the exact message including headers, I can add a recognizer for it. What I need is the contents of the message/rfc822 part that follows the "The attached message was received" notice you quote above up to the first "original message follows". I.e., just the DSN part and it's headers, not any of the multiple preceeding messages/DSNs/etc. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=100103&aid=1567408&group_id=103