Re: Mail not bounced after a 5xx error

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

On Mon, Apr 14, 2003 at 02:49:15PM -0500, Roy Bixler wrote:
> On Mon, Apr 14, 2003 at 10:12:36PM +0300, Matti Aarnio wrote:
> > Weird...    Code should be equivalent whatever version you are running,
> > to be exact.
> > 
> > Perhaps this is data dependent, somehow.
> 
> We have a suspicious mail in our queue:
> 
> smtp/inco.com.lb:
> <<- RCPT To:<ascertaisailorimprecis@inco.com.lb> NOTIFY=NEVER ORCPT=RFC822;ascer->> 503 5.5.0 No MAIL FROM command has been issued. (retry in 2m23s, expires in 1d1h, tries=217)
> 
> It turns out to be a bounced spam with the usual forged return
> address.  The remote SMTP server is blocking mail with a blank sender
> address:
> 
> MAIL FROM: <>
> 550 5.7.1 Blank sender address is not allowed!

  With 2.99.55 (debian package) I can believe this  deferring  to happen.

  With Wilbert's, Roy's, and my own (cooked up) test addresses,
  I just tried several ZMailer versions in different kinds of machines:

    Linux/i386 RedHat 7.2+updates:  3-Apr-2003 CVS:  "error" -> bounce
    Linux/i386 RedHat RawHide: development CVS:      "error" -> bounce
    Solaris 2.6/SPARC,  2.99.56-pre3 18-Sep-2002:    "error" -> bounce

  (ok, if there is differences in e.g. Linux glibc causing observed
   behaviour, that might appear here -- or maybe not.)

  Wilbert said: "We are running Zmailer 2.99.56-pre4 #1 from CVS"

(scratching my head...  "..when there are multiple messages in queue..")

  AH!  I see it happen.  I just had to send two messages immediately
  after each other, first one rejects, second one does stick around
  for some reason.

  Now I know how to repeat it.

     smtp_sync() did yield code 69/UNAVAILABLE (rcptstates = 0x4410)
  ( -> DATASTATE_500 | RCPTSTATE_500 | FROMSTATE_OK )


  Ah, pipeline decoder has the "RSET" verb OK response stuck into
  the status set, and that breaks the status decoding somehow.

> As with the last problem, we are running the Debian package of
> v. 2.99.55-3, which is essentially similar to plain v. 2.99.55.
> 
> Regards,
> -- 
> Roy Bixler <rcb@ucp.uchicago.edu>

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