I just got this back from my vendor.
Comments please...

----- Message Forwarded on Fri, 11 Jun 2004 08:31:58 -0700 -----
Subject: Re: Fwd: Re: [Mailman-Users] Uncaught bounces
Date: Fri, 11 Jun 2004 15:30:03 +1200

Hello Kevin,

drespond sends an empty mail from

mail from: <>

Nothing should try and respond to that.. if you see an empty mail from,
its a bounce, so I am not sure why something else would process it.


Wednesday, June 2, 2004, 7:32:43 AM, you wrote:
I just got this response from someone on a mailman list. I'm using Mailman for
my list server and its sending me bounces regarding drespond's method of
What is your response to this?
----- Message Forwarded on Tue, 01 Jun 2004 12:30:36 -0700 -----
From: Brad Knowles <brad.knowles at skynet.be>
To: gagel at cnc.bc.ca
Cc: mailman-users at python.org
Subject: Re: [Mailman-Users] Uncaught bounces
Date: Tue, 1 Jun 2004 18:45:09 +0200
At 8:06 AM -0700 2004/06/01, Kevin W. Gagel wrote:
What information do the developers need to add detection for
unknown automated
Where do I send that information?

I am using Netwin's DMail package with their DRespond for automated
messages. It adds a header is that all Mailman needs to know about?
The best thing would be to get Netwin to fix their software so
that it sends back RFC-compliant Delivery Status Notifications --
Mailman already knows how to deal with those. Indeed, most
mail-related programs on the Internet already know how to deal with
those, so by fixing this problem they'd make themselves much more
compatible with the entire rest of the world.
Otherwise, you need to take the bounce message format and write
some Python code to properly parse that, and then submit that code to
the Mailman developers.

Best regards,
Support DMail

Kevin W. Gagel
Network Administrator
(250) 561-5848 local 448
(250) 562-2131 local 448

The College of New Caledonia, Visit us at http://www.cnc.bc.ca
Virus scanning is done on all incoming and outgoing email.

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  • Brad Knowles at Jun 11, 2004 at 4:09 pm

    At 8:35 AM -0700 2004-06-11, Kevin W. Gagel wrote:

    I just got this back from my vendor.
    It doesn't matter what the envelope sender address is for the
    bounce. What matters is the format of the bounce itself. If the
    remote MTA rejected the connection without accepting the message,
    then it would be up to the local MTA to deal with the bounce, which
    might avoid this problem entirely.

    Otherwise, everything comes down to the format of the bounce message.

    Brad Knowles, <brad.knowles at skynet.be>

    "They that can give up essential liberty to obtain a little temporary
    safety deserve neither liberty nor safety."
    -Benjamin Franklin, Historical Review of Pennsylvania.

    SAGE member since 1995. See <http://www.sage.org/> for more info.

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groupmailman-users @
postedJun 11, '04 at 3:35p
activeJun 11, '04 at 4:09p

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Kevin W. Gagel: 1 post Brad Knowles: 1 post



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