Question

FogBugz seems to be mailing itself for my account at hearablog.fogbugz.com. If you see issue 736 it's an automatic response to 735 which was generated from the same email address fogbugz checks out.

One of the mails FogBugz sent to itself looked like this:

Delivered-To: info@hearablog.com
Received: by 10.142.186.4 with SMTP id j4cs1081650wff;
        Tue, 8 Dec 2009 06:49:12 -0800 (PST)
Received: by 10.224.80.98 with SMTP id s34mr4575650qak.98.1260283752316;
        Tue, 08 Dec 2009 06:49:12 -0800 (PST)
Return-Path: <info@hearablog.com>
Received: from mxny1.fogcreek.com (mxp11.fogcreek.com [64.34.80.172])
        by mx.google.com with ESMTP id 15si9409299qyk.57.2009.12.08.06.49.11;
        Tue, 08 Dec 2009 06:49:11 -0800 (PST)
Received-SPF: softfail (google.com: domain of transitioning info@hearablog.com does not designate 64.34.80.172 as permitted sender) client-ip=64.34.80.172;
Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning info@hearablog.com does not designate 64.34.80.172 as permitted sender) smtp.mail=info@hearablog.com
Received: from hbny2 (hbny2.fogcreek.local [10.2.0.22])
    by mxny1.fogcreek.com (Postfix) with ESMTP id DCA489584C
    for <info@hearablog.com>; Tue,  8 Dec 2009 09:46:06 -0500 (EST)
Date: 8 Dec 2009 09:49:11 -0500
X-Sender: "Hear a Blog" <info@hearablog.com>
From: "Hear a Blog" <info@hearablog.com>
precedence: junk
To: "info@hearablog.com" <info@hearablog.com>
Subject: Re: New blog post to record added
MIME-Version: 1.0
X-Receiver: info@hearablog.com
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
Message-Id: <20091208144606.DCA489584C@mxny1.fogcreek.com>

Thank you for your message. We have received it and will get back to you=
 as soon as possible.=0D=0A=0D=0AThe Hear A Blog Team=0D=0A

I can't be 100% certain to which mail it was replying.

Answer 1

There are multiple safeguards in place to make sure this doesn't happen. What is the notification email address of the user who's getting the email by default in the first place?

Answer 2

It looks like the From: and the To: are the same address and FogBugz is checking that mailbox, so what happens is the message comes in, FB receives it and writes an autoreply back to info@hearablog.com. Which goes right back into the mailbox and FogBugz does the same thing again. This will happen 3 times (and then the auto checks will stop the loop) per hour.