My company is getting spammed by itself, or rather by it’s Qmail, we’ve got a few automated processes sending out e-mails with Qmail and Zend Mail.
I’m not a expert in either of these, (I know literally nothing about them), and the ‘spam e-mails’ are Qmail telling us that a series of e-mails being sent isn’t RFC 5322 compliant.
Is there a way for me to locate what is generating these error e-mails? Or a place where I can find out what e-mails it’s trying to deliver but can’t.
This is the mail we recieve
From: MAILER-DAEMON@www.company.com [mailto:MAILER-DAEMON@www.company.com] Sent: 10. september 2013 15:10 To: firstname.lastname@example.org Subject: failure notice Hi. This is the qmail-send program at www.company.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@example.com>: 220.127.116.11 failed after I sent the message. Remote host said: 550 5.7.0 (BAY0-MC3-F46) Message could not be delivered. Please ensure the message is RFC 5322 compliant. --- Below this line is a copy of the message. Return-Path: <firstname.lastname@example.org> Received: (qmail 25746 invoked by uid 0); 10 Sep 2013 15:10:02 +0200 Message-ID: <email@example.com> To: user <firstname.lastname@example.org> Subject: From: Date: Tue, 10 Sep 2013 15:10:02 +0200 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
From: header has no value. This is a pretty blatant violation of RFC 5322. Fix your application so that it provides a valid value for the
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