Re: Blocking mail from bad places

[Ken Simpson <ksimpson () mailchannels com>]

James R. Cutler [05/04/07 16:30 -0400]:
> Todd makes my point exactly.  As he notes, the rejection message 
> tells me that the message was rejected by some system.  It does not 
> tell my why it was rejected.  Thus, just like this message, it adds 
> more to the noise to signal ratio!

Has anyone ever thought of standardizing the 500-responses from the
DATA phase? For instance, maybe 571 could always mean "rejected
because of the spam filter".

If there was a standard for these response codes then maybe clients
like Microsoft Outlook could do something useful with the error
message.

Regards,
Ken


> At 4/5/2007 12:28 PM -0700, todd glassey wrote:
>
> ----- Original Message -----
> From: <mailto:james.cutler () consultant com>James R. Cutler
> To: <mailto:nanog () nanog org>nanog () nanog org
> Sent: Thursday, April 05, 2007 12:08 PM
> Subject: Re: Blocking mail from bad places
>
> 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.
>
>
> Except that this message tells you why you cant send mail to Paul - 
> because Paul's system refused it, not because Paul's system didnt 
> exist or that Paul's address was bad.
>
>
> > 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
>
>
> -
> James R. Cutler
> james.cutler () consultant com

-- 
Ken Simpson, CEO
MailChannels Corporation
Reliable Email Delivery (tm)
http://www.mailchannels.com

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