[spambayes-dev] RE: Delivery Status Notification (Failure)

Seth Goodman sethg at GoodmanAssociates.com
Wed Sep 22 09:09:26 CEST 2004

> From: Neil Schemenauer
> Sent: Wednesday, September 22, 2004 1:45 AM
> To: spambayes-dev at python.org
> Subject: Re: [spambayes-dev] RE: Delivery Status Notification (Failure)
> [Seth]
> > I'm still curious why only a few of the list postings get
> > distributed with a VERP address and the rest don't.  Any idea on this?
> It is a feature of Mailman.  It uses VERP so it can detect dead
> addresses but doesn't always use it in order to conserve bandwidth.
> How much bandwidth is saved is open for debate.  Mailman has an
> option to enable VERP for every delivery.

That's a curious feature, and I agree it is debatable if it saves any
significant bandwidth.

The other odd behavior of this list is that it sets Sender: to the
return-path, even when it uses a VERP address, rather than the address of
the list owner.  This makes for a pretty unusual display of originating
address in the MUA when the return-path is a VERP address.  Is that also


Seth Goodman

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