[Savannah-help-public] [sr #104528] SMTP sender verification appears to have a too short timeout

[anonymous]

URL:
  <http://savannah.gnu.org/support/?func=detailitem&item_id=104528>

                 Summary: SMTP sender verification appears to have a too short
timeout
                 Project: Savannah Administration
            Submitted by: None
            Submitted on: Wed 08/03/05 at 19:37
                Category: Mail server
                Priority: 5 - Normal
                Severity: 3 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
        Platform Version: None
             Open/Closed: Open

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Details:

I've been getting a complaint by one of the subscribers to
some AVR-related lists (avr-chat, avr-gcc-list) that none
of his emails make it through the nongnu.org list server.
He's getting the following bounce:

This report relates to a message you sent with the following header fields:

    Return-path: <address@hidden>
    Received: from tcp-daemon.pop.mtnl.net.in by pop.mtnl.net.in
     (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004))
     id <address@hidden> (original mail from
address@hidden)
     ; Sun, 31 Jul 2005 12:54:43 +0530 (IST)
    Received: from royce ([59.182.8.199])
     by pop.mtnl.net.in (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14
2004))
     with ESMTPA id <address@hidden> for
address@hidden; Sun,
     31 Jul 2005 12:54:31 +0530 (IST)
    Date: Sun, 31 Jul 2005 12:54:33 +0530
    From: Royce & Sharal Pereira <address@hidden>
    Subject: UART with internal RC osc.
    To: AVR-CHAT <address@hidden>
    Reply-to: address@hidden
    Message-id: <address@hidden>
    MIME-version: 1.0
    Content-type: text/plain; format=flowed; delsp=yes; charset=iso-8859-15
    Content-transfer-encoding: 7BIT
    User-Agent: Opera M2/8.02 (Win32, build 7680)

Your message cannot be delivered to the following recipients:

    Recipient address: address@hidden
    Reason: Remote SMTP server has rejected address
    Diagnostic code: smtp;550 Sender verify failed
    Remote system: dns;mx10.gnu.org
(TCP|202.159.228.5|46134|199.232.76.166|25) (monty-
python.gnu.org ESMTP Exim 4.34 Sun, 31 Jul 2005 03:34:53 -0400)

riginal-recipient: rfc822;address@hidden

Final-recipient: rfc822;address@hidden

Action: failed

Status: 5.0.0 (Remote SMTP server has rejected address)

Remote-MTA: dns;mx10.gnu.org (TCP|202.159.228.5|46134|199.232.76.166|25)

   (monty-python.gnu.org ESMTP Exim 4.34 Sun, 31 Jul 2005 03:34:53 -0400)

Diagnostic-code: smtp;550 Sender verify failed

Using a different sender address, it (obviously) works.  I
tried the address specified, and it seems the target MTA
requires quite a bit of time after the `rcpt to' command
to decide about the validity of the request, but eventually
(after something like 45 seconds) gives a positive response:

% telnet 202.159.228.19 25
Trying 202.159.228.19...
Connected to mx1.mtnl.net.in.
Escape character is '^]'.
220 mtnl-av SMTP service ready
helo uriah.heep.sax.de
250 Requested mail action okay, completed.
mail from: <address@hidden>
250 Requested mail action okay, completed.
rcpt to: <address@hidden>
250 Requested mail action okay, completed.
quit
221 mtnl-av closing transmission channel
Connection closed by foreign host.

It responds a lot faster at a second attempt.






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