Re: Mail not bounced after a 5xx error

[Matti Aarnio <mea@nic.funet.fi>]

On Mon, Apr 14, 2003 at 04:33:10PM +0200, wilbert.schapendonk@nld.mci.com wrote:
> Hi,
> 
> We are running Zmailer 2.99.56-pre4 #1 from CVS and are experiencing a 
> problem where zmailer leaves mail in the queue when the remote server 
> issues a 5xx error after the 'MAIL FROM' command and an additional 5xx 
> error when zmailer continues with a 'RCPT TO' command.

This is weird, since past couple months there has been no changes
in the  smtp TA processing logic -- since version 1.262, or since
26-Jun-2002.

> The session goes like this:
> 
>     220 mail.exampledomain.com ESMTP Sendmail 8.12.8/8.12.6; Mon, 14 Apr 2003 11:31:54 +0200 (CEST)
>     EHLO fallback.exampledomain.com
>     250-mail.exampledomain.com Hello fallback.exampledomain.com, pleased to meet you
>     250-ENHANCEDSTATUSCODES
>     250-PIPELINING
>     250-8BITMIME
>     250-SIZE
>     250-DSN
>     250-ETRN
>     250-DELIVERBY
>     250 HELP
>     MAIL From:<junk@spammerdomain.com> BODY=8BITMIME SIZE=381
>     RCPT To:<user@exampledomain.com>
>     DATA
>     550 5.0.0 <junk@spammerdomain.com>... Go away, we don't want you here
>     503 5.0.0 Need MAIL before RCPT
>     503 5.0.0 Need MAIL command
>     RSET
> 
> This mail would stay in the queue with 'stat=deferred  ->> 503 5.0.0 Need 
> MAIL before RCPT' and zmailer will try to deliver it using the same 
> sequence of commands until the mail expires.

I simulated this with explicitely created blocked source address,
and a generic scratchpad target address:

  ...
  220 vger.kernel.org ZMailer Server 2.99.56-pre4 #1 ESMTP+IDENT ready at Mon, 14 Apr 2003 14:28:54 -0400
  EHLO mail.zmailer.org
  250-vger.kernel.org Hello mail.zmailer.org
  250-SIZE 0
  250-8BITMIME
  250-PIPELINING
  250-ENHANCEDSTATUSCODES
  250-DSN
  250-ETRN
  250 HELP
  MAIL From:<me-spammer@zmailer.org> BODY=8BITMIME SIZE=271
  RCPT To:<nobody@vger.kernel.org> NOTIFY=FAILURE 
  DATA
  553 5.7.1 For MAIL FROM address <me-spammer@zmailer.org> policy analysis reported: Your domain is not liked source for email
  550 5.7.1 Access denied by the policy analysis functions by earlier rejection
  503 5.5.2 Waiting for MAIL command
    smtp_sync() did yield code 69/UNAVAILABLE (rcptstates = 0x2440)
    .. timeout ? smtp_sync() rc = 69
  scheduler done processing 258556-7246


Weird...    Code should be equivalent whatever version you are running,
to be exact.

Perhaps this is data dependent, somehow.


> Is there a way to get these messages bounced after the first delivery
> attempt?
> 
> Thanks,
> 
> Wilbert

-- 
/Matti Aarnio	<mea@nic.funet.fi>
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