full-disclosure - 3 Copies of messages?

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Message-ID: <20031016142021.GA1133@ssc.com>
From: dan at ssc.com (Dan Wilder)
Subject: 3 Copies of messages?

On Thu, Oct 16, 2003 at 08:57:16AM -0400, Jonathan A. Zdziarski wrote:
> Is anyone else getting 3 copies of every full disclosure message? I know
> I only subscribed once.
> 
> 
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html
> 

Not me.

As always with duplicated emails, compare the headers.  Naah,
_any_ time there's an email mystery, the first thing to do is get
the headers.

At the top of the email you'll see a series of "Received:" headers,
added by the various hosts that handled the mail, youngest
headers higher, oldest lower.  You may have to fiddle with your email
client to make these headers visible.  Or save the email to a
file and use a text editor on it.

Compare the duplicated emails.  Typically you'll see the oldest,
lowest, headers the same.  These will be the ones added by the
poster's system.  Moving upward, you'll see at some point two
corresponding headers that differ.  Bingo.  The mail became
duplicated sometime after it was received by the host that
added identical headers and before it was received at the 
next hop, where the headers differ.

If _none_ of the headers are different, the duplication was
at your end, perhaps a procmail recipe that delivered twice.
If all execpt the oldest pair of headers differ, you were
cc'd or bcc'd by the sender.

-- 
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