[95829] in North American Network Operators' Group
Re: Blocking mail from bad places
daemon@ATHENA.MIT.EDU (James R. Cutler)
Thu Apr 5 15:10:36 2007
Date: Thu, 05 Apr 2007 15:08:51 -0400
To: nanog@nanog.org
From: "James R. Cutler" <james.cutler@consultant.com>
In-Reply-To: <461517FD.9010608@thomasleavitt.org>
Errors-To: owner-nanog@merit.edu
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At 4/5/2007 08:38 AM -0700, Thomas Leavitt wrote:
One problem with the "bounce" solution is that <snip/>
==========================
So, I (Cutler) add:
And, even the best-intentioned bounce messages often give lots of
data, but no information, thus increasing the noise to signal
ratio. For example, Paul most likely knows what the following means
to him. To me it just means I can't send mail to Paul.
>This message was created automatically by mail delivery software.
>
>A message that you sent could not be delivered to one or more of its
>recipients. This is a permanent error. The following address(es) failed:
>
> paul@vix.com
> SMTP error from remote mailer after RCPT TO:<paul@vix.com>:
> host sa.vix.com [204.152.187.1]: 553 5.7.1 Service unavailable;
> Client host [209.86.89.61] blocked using reject-all.vix.com; created / reason
>
>------ This is a copy of the message, including all the headers. ------
-
James R. Cutler
james.cutler@consultant.com
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<font size=3>At 4/5/2007 08:38 AM -0700, Thomas Leavitt wrote:<br><br>
One problem with the "bounce" solution is that
<snip/><br>
==========================<br>
So, I (Cutler) add:<br><br>
And, even the best-intentioned bounce messages often give lots of data,
but no information, thus increasing the noise to signal ratio. For
example, Paul most likely knows what the following means to him. To
me it just means I can't send mail to Paul.<br><br>
<blockquote type=cite class=cite cite="">This message was created
automatically by mail delivery software.<br><br>
A message that you sent could not be delivered to one or more of its<br>
recipients. This is a permanent error. The following address(es)
failed:<br><br>
paul@vix.com<br>
SMTP error from remote mailer after RCPT
TO:<paul@vix.com>:<br>
host sa.vix.com [204.152.187.1]: 553 5.7.1 Service
unavailable; Client host [209.86.89.61] blocked using reject-all.vix.com;
created / reason<br><br>
------ This is a copy of the message, including all the headers.
------</blockquote><br><br>
</font><x-sigsep><p></x-sigsep>
<font face="Courier, Courier" size=3>-<br>
James R. Cutler<br>
james.cutler@consultant.com<br>
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