Lorenzo Perone writes:
Hello to all,I'm getting these really weird DSN messages and can't really figure out now if it's the client going nuts, the courier MTA finally starting to make funy jokes with crappy clients, or if it's some kind of hacking/spamming attempt over SqWebmail or over any other part of the package. Below there's such a message.Notes:- I replaced the original domain with example.com and the original user name with firstname.surname). - I'm adding the X-Env-Sender header over the maildrop command in the courierd conf file (-a X-Env-Sender: $SENDER). (btw: is there any way, meanwhile, to add the envelope recipient too? $RECIPIENT used to put in the same as Delivered-To..) - There is apparently no content in those messages. Some users have reported to see a "QUIT" in them.##snip##X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail.example.comX-Spam-Level: *** X-Spam-Status: No, score=3.5 required=4.0 tests=ALL_TRUSTED,BAYES_00,EMPTY_MESSAGE,MISSING_HB_SEP,MISSING_SUBJECT,TVD_SPACE_RATIO autolearn=noversion=3.2.5 X-Maildrop: Processing X-Env-Sender: #...@[] Delivered-To: [email protected] Received: from localhost (localhost [127.0.0.1]) (ftp://ftp.isi.edu/in-notes/rfc1894.txt) by mail.example.com with dsn; Mon, 15 Jun 2009 00:46:25 +0200 id 0048F5F6.000000004A357DC1.00016B09 Message-ID: <[email protected]> Date: Mon, 15 Jun 2009 00:46:25 +0200 To: undisclosed-recipients: ; ##/snip##What I'm wondering about is the Received: header. If it was a client, then afaik there should be the IP it is mailing from.
The Received: header is the standard Received: header on Courier's bounces. Everything else is probably due to a horribly broken mail filtering recipe that chewed up the entire message.
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